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Operator
Good morning, and thank you for holding. Welcome to the Aon PLC's third-quarter 2015 earnings conference call.
(Operator Instructions)
I would also like to remind all parties that this call is being recorded. And that it is important to note that some of the comments in today's call may constitute certain statements that are forward-looking in nature as defined by Private Securities from Reform Act of 1995.
Such statements are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results of those anticipated. Information concerning risk factors that could cause such differences are described in the press release covering our third quarter 2015 results as well as having been posted on our website.
Now, it is my pleasure to turn the call over to Greg Case, President and CEO of Aon plc.
- President & CEO
Good morning, everyone, and welcome to our third quarter 2015 conference call. Joining me today is our CFO, Christa Davies. I would note that there are slides available on our website for you to follow along with our commentary today.
Consistent with previous quarters, I'd like to cover two areas before turning the call over to Christa for further financial review. First, is our performance against key metrics we communicate to shareholders. And second is overall organic growth performance, including continued areas of strategic investment across Aon.
On the first topic, our performance versus key metrics. Each quarter, we measure our performance against the key metrics we focus on achieving over the course of the year. Grow organically, expand margins, increase earnings per share and deliver free cash flow growth.
Turning to slide 3. In the third quarter, organic revenue growth was 2% overall, with growth across both segments. Highlighted by 5% growth in the HR outsourcing business, and 4% growth in the Americas retail brokerage business.
Operating margin increased 30 basis points, reflecting solid operating performance in both segments. EPS decreased 4% to $1.24, as unfavorable foreign currency translation and a gain on the sale of a business of the prior-year more than offset organic growth, operational improvement and effective capital management. And finally, free cash flow for the nine months is up 21% to $850 million, a strong performance driven by operational improvement and working capital management.
Turning to slide 4. On the second topic of growth and investment. I want to spend the next few minutes discussing the quarter for both of our segments.
In risk solutions, organic revenue growth was 1% overall in our seasonally weakest quarter, similar to the prior year. Reflecting growth across retail brokerage, partially offset by a decline in reinsurance. For the nine months, organic revenue growth is 2%, in line with our expectation of low to mid single-digit growth going into our seasonally strongest quarter.
As we discussed previously, we're driving a set of initiative and making strategic investments that are strengthening underlying performance and position our risk solutions segment for long-term growth and improved operating leverage. With management on our renewal book through Aon Client Promise and retention rates of more than 90% on average across retail brokerage.
New business generation of $240 million across our retail business, with record new business in US retail. 18 consecutive quarters of positive net new business in core treaty reinsurance. Increased operating leverage from our investments in innovative technology and data analytics, including in the Global Risk Insight Platform, which now captures over 2.9 million trades and $139 billion of bound premium, with more than 40 carriers utilizing the platform today.
To review, our reinsured dashboard combined with strategic consulting to help reinsurers be more effective markets for seating company clients. And our Aon broking initiative to better match client needs would ensure appetite for risk and to identify structured portfolio solutions. And finally, we are expanding our content and global footprint through tuck in acquisitions that increase scale in emerging markets or expand capability.
Reflecting on the individual businesses within risk solutions. In the Americas, organic revenue growth was 4%, compared to 2% in the prior-year quarter. The exposures continue to be positive across the region, while the impact from pricing was modestly negative. Results in a continued stable market impact overall.
We saw growth across all regions, US retail, Latin America and Canada, including growth across all businesses. Property and Casualty, Health and Benefits, and Affinity. On US retail and Canada, growth was driven by strong new business generation, while strong management of the renewal book drove growth in Latin America.
In international, organic revenue growth was 1%. Exposures continue to be stable, and the impact from pricing was modestly negative on average. Driven by fragile market conditions in many countries across Europe, and continued pressure in the Pacific region.
We saw strong growth in New Zealand, driven by double-digit new business generation. Results also reflect solid growth across Asia, primarily in emerging markets, China and Thailand. Driven by strong management of the renewal book portfolio.
In Continental Europe, we continue to see modest growth. And with strong leadership across the region, we are well positioned to benefit from potential improvements in the macroeconomic environment.
In reinsurance, organic revenue declined 4%, similar to the prior-year quarter, and for the nine months was minus 2%, roughly in line with our expectation of a modest decline for the year. Results in the quarter primarily reflect significant unfavorable market globally, a modest decline in facultative placements, and modest unfavorable impact from timing.
In our treaty portfolio, we saw a record level of new business generation in the quarter. Driven by an increase in seating demand, and growth in new products from areas such as US mortgage and review. And while excess capital continues to place pressure on the market, the rate of price decline continues to moderate.
Against that price pressure, clients are buying more and capital is being deployed to new markets. New opportunities for growth, combined with industry leading data and analytics, is positioning the business for a return to growth on a quarterly basis in the next 12 months.
Overall, across risk solutions we continue to deliver new business generation and strong retention. Driven by a unified approach to serving clients across the portfolio, and industry-leading data and analytics. We expect improved performance in the fourth quarter, placing us firmly on track for solid organic revenue growth for the full year 2015, despite continued pricing pressure in reinsurance and fragile economic conditions in Continental Europe.
Turning to HR solutions. Organic revenue growth was 5%, with solid growth across both major businesses, and in high demand areas, where we have invested in innovative solutions and client serving capability. These reflect investments from Aon Hewitt in client leadership and our in depth understanding and influence on overall market trends.
Including as clients manage risk against pension schemes that are frozen, largely underfunded, and facing regulatory changes. Solutions to de-risk pension plans and support for delegated investment solutions are a strong area of growth where assets under management have grown from $10 billion to roughly $70 billion in five years. Continued investment to strengthen our industry-leading portfolio of health solutions, covering the full range of benefit strategies, client size and funding choices.
Across Aon's suite of private health exchanges, we expect to enroll roughly 1.4 million lives across 150 clients compared to roughly 1.2 million lives across 100 clients in the prior year. Broken down into active exchange with 1 million enrolled lives across 55 clients, and retiree exchange with 400,000 enrolled lives across 75 clients. The growth reflects continued progress to achieve scale and drive new revenue, as roughly two-thirds of all clients who have joined the exchange are new to Aon.
Our growth reflects both self and fully insured solutions, including the industry's leading large corporate fully insured multi-carrier model. Our range of solutions provide clients with the unique ability to seamlessly transition between funding choices, depending on their level of risk tolerance. In addition, representation now spans 22 distinct industries.
We look forward to providing further details after we complete enrollment in the fourth quarter. With potential further updates on client wins, as we are already in very active discussions for 2016 off cycle and 2017 enrollment.
We've also highlighted our investment in software as a service model at our HR BPO business. Where growth in new clients and conversion of existing clients is driving strong demand, as well as the expansion of our capabilities to include financial imitations. Finally, we are investing in our talent rewards business as we are seeing strong demand for data analytics to support organizational change.
Turning to our individual businesses within HR solutions. In consulting services, organic revenue growth was 3%. The prior-year quarter included a significant favorable benefit from timing due to a change in revenue recognition policy in our compensation consulting business. Results in the quarter reflect continued growth in retirement consulting, primarily driven by demand for delegated investment consulting services.
We also saw continued growth in compensation consulting. Driven by demand for survey work as companies require benchmarking, and assistance with plan design to address retention and ways to compete for talent more effectively.
In outsourcing, organic revenue growth was 5% compared to 3% in the prior-year quarter. Results reflect solid growth in benefits administration, driven by and increase in project related work and growth in our assets management business. We also saw continued growth in HR BPO, driven by new client wins in cloud-based solutions and growth in our healthcare Xchange business from off cycle enrollments on the retiree exchange.
Overall for HR solutions, we are well-positioned to deliver continued organic revenue growth across both segments for the fourth quarter, and full year 2015. Driven by high-demand areas where we've made investments, as well as continued leadership across our core businesses.
In summary, despite short-term headwinds, we continue drive growth across both segments, improve our operational performance, and deliver significant free cash flow growth. Looking forward, we expect a strong finish to the year and continued long-term growth, driven by our industry-leading platform of client-serving capabilities and investments in data and analytics.
With that said, I'm now pleased to turn the call over to Christa for further financial review. Christa?
- CFO
Thank you so much, Greg, and good morning, everyone.
As Greg noted, our third-quarter is our seasonally weakest quarter, and we continue to face both macroeconomic and specific industry headwinds. However, against these headwinds, the strength of our industry-leading franchise continues to perform. Our results in the quarter reflect organic growth and operating margin improvement across both risk and HR solutions, substantial free cash flow growth, and effective capital management, highlighted by the repurchase of 600 million ordinary shares in the quarter.
Now let me turn to the financial results for the quarter on page 6 of the presentation. Our core EPS performance, excluding certain items, decreased 4% to $1.24 per share to the third quarter compared to $1.29 in the prior-year quarter. The prior-year quarter included a $25 million pre-tax or $0.07 per share after-tax gain related to the sale of a business.
Certain items that were adjusted for in the core EPS performance and highlighted in the schedules on page 12 of the press release, include non-cash intangible asset amortization. Further, included in the results was a $0.09 per share unfavorable impact related to foreign currency translation, due to the US dollar strengthening against most major currencies. Excluding the impact of foreign currency translation, our core earnings per share in the third quarter would've been $1.33, up 3% from the prior-year quarter.
Going forward, while currency movement has been challenging to predict, if currency were to remain stable at today's rates, we would expect a similar impact in Q4 as we incurred in Q3 due to continued US dollar strengthening. As we look forward to 2016, we would anticipate substantially less of a headwind as the year-over-year comparisons become easier, with that unfavorable impact of roughly $0.05 to $0.10 per share for the full year 2016 compared to approximately $0.41 of impact for the full-year 2015. I would note that the FX rates remains stable at today's rates.
Now let me talk about each of the segments on the next slide. In our risk solutions segment, organic revenue growth was 1%, operating margin increased 50 basis points to 20.8%, and operating income decreased 6% compared to the prior-year quarter. Operating income included a $25 million unfavorable impact from foreign currency translation. Excluding this impact, operating income increased 1% versus the prior-year quarter.
Operating margin improvement of 50 basis points reflects a 40 basis point favorable impact from foreign currency translation. Excluding the favorable impact from foreign currency, underlying operating margin improved 10 basis points in the quarter, driven by continued operational improvement in our seasonally weakest quarter.
Overall in Q3, we delivered underlying operational performance in risk solutions. Despite continued headwinds from an unfavorable market impact in reinsurance, fragile market conditions in Europe, and historically low interest rates. If short-term interest rates were to rise, we believe we have significant leverage for an improving interest rate environment, as every 100 basis point rise in global interest rates should result in approximately $45 million of investment income.
For the first nine months, excluding the impact of foreign currency translation, operating income increased 4% and operating margin improved 50 basis points. As we approach our seasonally strongest quarter in risk solutions, performance places us firmly on track for further margin expansion in 2015 towards our a long-term target of 26%. Driven by growth, return on investments, and expense discipline as we optimize our global cost structure in areas such as IT, real estate and global procurement.
Turning to the HR solutions segment. Organic revenue growth was 5%, operating margin increased 90 basis points, and operating income increased 6%. Results reflect solid organic revenue growth, expense discipline, and improved profitability in the areas where we've been investing for long-term growth. Including delegated investment consulting, cloud-based solutions in HR BPO, and healthcare exchanges where we believe we have achieved enough scale to deliver modest profitability in 2015.
For the first nine months, excluding the impact of foreign currency translation, operating income increased 6% and operating margin improved 30 basis points. As we approach our seasonally strongest quarter in HR solutions, performance places firmly on track for further margin expansion in 2015 towards our long-term target of 22%. Driven by growth, return on investments, and expenses [plug].
Now let me discuss a few the line items outside of the operating segments on slide 9. Unallocated expenses were $45 million, in line with quarterly guidance. Interest income was $3 million, similar to the prior-year quarter.
Interest expense increased $7 million to $72 million, due to an overlap of expiring debt in the quarter. Other income of $8 million primarily includes net gains from certain long-term investments. While the prior-year quarter benefited from the sale of certain businesses and net gains from certain long-term investments.
Going forward, we expect a run rate of approximately $45 million per quarter of unallocated expense, and $2 million per quarter of interest income. Interest expense in the fourth quarter is expected to be approximately $68 million, as $600 million of overlapping notes were paid in September.
Turning to taxes. The adjusted effective tax rate on net income from continued operations, excluding the applicable tax impact associated with expenses related to legacy litigation in Q2, decreased to 16%. Compared to the prior-year quarter at 19.1%, due to the favorable impact of certain discrete tax adjustments. Our underlying operating tax rate remains at 19%.
Lastly, average dilutive shares outstanding decreased to 283.8 million in the third quarter, compared to 296.1 million in the prior-year quarter. The Company repurchased 6.3 million class a ordinary shares for approximately $600 million in the third quarter. The Company has 4.5 billion of remaining authorization under its share repurchase program.
Actual shares outstanding on September 30 were $273.9 million, and there are approximately 7 million additional dilutive equivalents. Estimated Q4 2015 beginning dilutive share count is approximately $281 million, subject to share price movement, share issuance and share repurchase.
Now let me turn to the next slide to highlight our solid balance sheet and strong cash flow on slide 10. At September 30, cash and short-term investments were $783 million. Total debt outstanding increased to approximately $6.1 billion, and total debt to EBITDA on a GAAP basis increased to 2.6 times.
Cash flow from operations for the first nine months increased 22% or $192 million to $1.1 billion. Driven by working capital improvements, a decline in pension contributions, restructuring and cash for taxes. Partially offset by a significant increase in cash paid to settle legacy litigation flowing through net income in the second quarter.
The increase in cash paid of $137 million to settle legacy litigation in the previous quarter will provide a tailwind to free cash flow growth in 2016. Free cash flow is defined by cash flow from operations, less CapEx, increased 21% or $146 million to $850 million, reflecting strong growth in cash flow from operations, partially offset by a $46 million increase in CapEx. The anticipated increase in CapEx in 2015 is associated with investment in certain real estate projects, as we continue to optimize our real estate portfolio globally.
Turning to the next slide to discuss our significant financial flexibility, and the opportunity to further increase cash flow generation. We value the Firm based on free cash flow, and allocate capital to maximize free cash flow returns. There are four primary areas that are expected to contribute to our goal of delivering $2.3 billion or more for the full year 2017.
Free cash flow to $2.3 billion is not our end goal, as further long-term sustainable free cash flow will be driven by continued operating income growth and additional working capital initiatives beyond 2017. We continue to believe the plans we've put in place have positioned the Firm to benefit from abnormal growth in free cash flow, and free cash flow per share in the near-term, providing significant opportunity for shareholder value creation.
From the graph in the presentation, based on current assumptions, we expect annual free cash flow to increase by approximately $230 million from year end 2014 to year end 2017 based only on a reduction in cash use of pensions, restructuring and CapEx. Combined with operational improvement in the business, lower cash tax payments, and working capital improvements in areas such as accounts receivable and accounts payable, we have a line of sight to delivering on our expectations for substantial free cash flow generation.
Regarding our pension plans, we've taken significant steps to reduce volatility and liability, as we've closed plans to new entrants and frozen plans from accruing additional benefits, and continued to de-risk certain plan assets. We currently expect contributions to decline by roughly $96 million to $220 million in 2015, and continue to decline thereafter.
These expectations are based on 12/31/2014 actuarial assumptions. A rise in global long-term interest rates could potentially decrease contributions further.
Regarding our restructuring program. Cash payments were $82 million in 2014. As all charges related to the restructuring program have now been incurred, we would expect cash payments to decline by $51 million to approximately $31 million in 2015, and continue to decline significantly each year thereafter.
In summary, we delivered organic growth and margin expansion across both segments, as we continue to manage expense and create greater operating leverage from our investments in data and analytics. Strong operating performance in the fourth quarter, combined with declining uses of cash and working capital improvements, are expected to deliver double-digit free cash flow growth for 2015. Placing us firmly on track toward our goal of generating more than $2.3 billion free cash flow for the full year 2017.
With a strong balance sheet and significant financial flexibility, we've positioned the Firm for significant shareholder value creation in 2015 and beyond.
With that, I'd like to turn the call back over to the operator for questions.
Operator
Thank you.
(Operator Instructions)
Our first question is from Dave Styblo with Jefferies.
- President & CEO
Dave, you might be on mute. Why don't we go to the next one, operator.
Operator
Dave Styblo of Jefferies, your line is open.
- Analyst
Can you guys hear me at this point?
- President & CEO
Yes, we can, Dave.
- Analyst
Thanks for taking the questions, but you missed that part. But wanted to talk a little bit about the Americas business, the retail side there held up well at plus 4%. And I guess I was surprised it did so well considering it includes Latin America, where you've got economies like Brazil which are now experiencing a GDP decline.
So can you help me understand, is the out performance or the strong performance there in Latin America continuing. Or are we doing just that much better on the other parts of Canada and the US to offset some of the pressure that might be going on in Latin America?
- President & CEO
Actually, Dave, we had solid growth across the board, and it comes in different categories and different places. But if you think about how we think about growth, it's new business and then retention in something we call rollover overall. And we've been able to generate substantial new business growth, which is new clients coming into the Firm, as well as doing more with existing clients which is retaining and then rollover which is actually doing more with them.
And then in businesses like our Affinity business, which has been exceptionally strong, we are also seeing substantial growth. And we have on the US side, record new business generation.
So a lot of the investments we have made over time continue to reap benefits, and you are seeing the results. I would emphasize again, though, look at it on an annual basis. So the quarter to quarter's always move around in different places, but it's a very, very positive piece overall.
- Analyst
That's helpful, thanks. And on HR solutions, the margin is up 90 basis points there year over year in light of what I think was -- I think you guys had a tough comp last year where you had some favorable timing that lifted revenue and margins.
Was there any timing in this quarter? Obviously, you guys talked about two of the three factors that did help this quarter. And if you could elaborate to what extent are those sustainable versus project oriented and maybe one-time in nature?
- CFO
We feel very good about the performance of HR solutions, not necessarily in Q3, but really in the nine months year to date. We have had operating income growth of 6%, excluding FX, in the nine months year to date and margin expansion of 30 basis points. And we would say they are well on track to follow revenue growth, margin expansion and operating income growth for the full year.
And that is really coming from the return on the investments we've made. We're getting continued revenue growth and margin expansion from the significant investments we've made in delegated investment consulting and healthcare exchanges, and in HR BPO SaaS.
- Analyst
Okay, great. And then just lastly on the exchanges, it sounds like the 1.4 million, is that a estimate for January or year end 2016? And I guess that implies something along the lines of 15% to 20% membership growth, which is maybe a little lower than peers.
Curious to hear what you are seeing in the market, is there some clients who maybe have deferred? Or what is your thoughts on the adoption and pace of adoption relative to your expectations?
- President & CEO
I'd say you step back overall. First of all, the number we've report, 1.4 million, is enrolled lives. So these are actually folks who are paying us, and money exchanging hands for the solutions we provide. And there's a lot going on around definitions and how different folks describe the business overall.
We are explicit about how we describe our unenrolled lives. I would say, Dave, overall, we agree the adoption across the board when you think about it, especially at the larger end of the market, has not been as fast as we would have expected. This is especially true given the results we've seen with our existing Xchange clients.
We have been able to sustainably lower costs, reduce volatility, and very importantly, the employee choice has gone up and there's very, very high satisfaction. Our view is, we are confident that over time you're going to see the market develop. It's going to accelerate, it's going to be an uneven pace, no doubt, but our pipeline is strong.
We are in discussions with a number of very large innovative companies around solutions and ideas, so we feel very, very good about the development. I would highlight, we've gone from zero to 1.4 million lives, as and Christa described, we were marginally profitable in 2015. So we've made progress, and we are seeing continued development on that platform.
But, last point I'd make on this, it is important to put this into context over overall health effort. We love the health space. We believe in it, we believe we're going to make a difference globally overall and behalf of our clients. And from classic health, health and benefits, global benefits, I'd just remind you, we place more than $10 million in health benefits in the US alone every year.
And exchanges have been very strong, zero to 1.4 million. By the way, as I said in my opening comments, two-thirds of the clients who've come in in the exchanges are new to Aon and 15 clients overall. And we see there is a very positive continued development, and overall in the context of the health opportunities, we see it as quite strong.
- Analyst
That's helpful. So just the paying members as of what you'd get in January is what that 1.4 million is then, right?
- President & CEO
Correct. But there's a lot that's going on mid cycle, a lot that's going on in terms of overall 2017. But that's literally clinically as of today.
- Analyst
Thanks.
Operator
Adam Klauber of William Blair.
- Analyst
Thanks, good morning. Just one follow-up on the active Xchange. So for the large clients, what are the one or two factors that's holding them back from pulling the trigger right now?
- President & CEO
I think, Adam, that actually it is a range of different pieces. They don't look at it as this year or next year, they're really looking at what's in the best interest over time of their employee base, and how that's developing. They're also looking at some of the trend line in the marketplace and what's out there as overall health costs, and the level of urgency.
And so for them, it really is a range of different items. So we would come back to the clients who we brought into this environment, the impact has been substantial and now sustained over a multi-year period. And more and more companies are seeing that and actually taking some comfort in some of the sustainability of the overall model.
But as I said before, the pipeline is strong and this is going to develop. If you think back, the lessons around DB to DC and the overall solutions, these things take a period of time.
But what we keep coming back to is the fundamental value proposition is quite strong and now sustained, and we think that is going to carry the day over time. But still keep coming back to though, it's about an overall health platform. And a level of demand across health, which we think is continue to go up, and the Xchange has served one part of that overall market.
- Analyst
Okay, thanks. And then on cash flow, the operating cash flow from operations was very strong this quarter. It jumped from $365 million to almost $1.1 billion.
I guess two questions. One, was there anything unusual in that? And also historically, third quarter is strong but fourth quarter is stronger from an operating cash flow. Should that continue to hold?
- CFO
Adam, I think that's a great question. We are exceptionally pleased with the cash flow in the nine months year to date. There were no unusual items in there, and yes, Q4 is our seasonally strongest cash flow quarter.
So we are well on track to deliver double-digit free cash flow growth into 2015. The thing I would note that was unusual in calendar year 2015 was the $137 million impact to cash in Q2 that was an outflow of cash on litigation settlements.
- Analyst
True, okay. And then also on cash flow, I think you said you expect $230 million annually of free cash flow. Does that exclude or not include just normal improvement from earnings?
- CFO
Yes. So what I referred to there was from year end 2014 to year end 2017, you can see in the slides that we posted on her website that there was an increase in cash flow of $230 million, just from decreased cash spent on pension restructuring and capital expenditure.
- Analyst
Right, okay.
- CFO
But there are really four big drivers of cash flow to get to our $2.3 billion in cash by 2017. The first is obviously growth in revenue and expansion in margin, which will lead to operating income growth.
The second is working capital improvements, and we think they are sustainable for many years to come. The decreased used of cash I've just talked about and the reduction in tax rate leading through to less cash spent on taxes.
- Analyst
Thank you. And then finally, just one more here. The workday service implementation business is doing very well.
Is that growing -- would you say that's growing much faster than your overall HR consulting business? And as you look to 2016 and 2017, are you doing more types of products, not just workday, but adding other software suites to that business?
- CFO
So we've obviously invested significantly in this area of business through the acquisition of OmniPoint and the acquisition of Kloud. We are very pleased with the breadth of solutions we can offer clients in the HR BPO space. And obviously, software as a service holds a much more feature rich and effective set of services for clients at a much lower cost.
So it is a very high area of growth for us, and it's continuing to grow double digits. We feel really good about this solution and being able to continue to grow the solution set for clients.
- President & CEO
And we've put it in context with the other investments we're making in terms of overall size. On the investments consulting side, the delegated, address what's on talent, obviously Xchange as we've talked about. So there's a portfolio of investments we are making, and fully funding by the way, and as part of the P&L that we can drive performance and invest for the future.
- Analyst
Would you say is the margin on that business equal or greater to your average HR consulting margins?
- CFO
What we've said historically on our -- as we think about our margin growth from where we are in HR solutions, let's call it, 17% today, to our 22% long-term target, that there are really three big drivers of margin expansion. The first is the return on the investments that we have made. We've invested a loss in delegated and exchanges, et cetera.
The second is the growth in margins in our HR BPO business. We've talked historically about our HR BPO business being about a $500 million business, that had very low single-digit margins. And really one of the things that is driving the expansion in margin is our investments in BPO, SaaS, and these innovative solutions for class.
And the third driver of margin expansion in HR solutions is our expense discipline. And continuing to manage expenses very carefully around IT, real estate and procurement.
- Analyst
Great. Thank you, very much.
Operator
Next we have Sarah DeWitt of JPMorgan.
- Analyst
In insurance brokerage, the organic growth in the quarter of 1% was at the lower end of your target of low to mid single-digit organic growth. Is there anything unusual that depressed that, and should we expect to see a rebound in the fourth quarter in 2016?
- President & CEO
Sarah, I would characterize really -- and Christa started on this path, if you really look at for the first nine months of the year, first nine months of the year is stronger now than it was against 2014. So the short answer is no, in fact, look at it over the course of the year.
Nothing has changed. We would characterize the quarter as a quarter of continued progress against the long-term objectives, and look at risk. Organic revenue for the nine months was 2%, operating income increased 4%, margin up 50 basis points. That's roughly where it was last year.
We are now going into strongest quarter. We believe the reinsurance business is improving, Continental Europe looks a bit more positive, or at least stable. A lot of the investments we've made are very good. So from our standpoint, we feel like this quarter in risk -- and by the way, in HR as well is just another good quarter of continued progress.
- Analyst
Great, thanks. And then in HR solutions, last year you did high single digit adjusted operating income growth. And given that the private exchange enrollment for 2016 sounds maybe a little bit lighter than we would have expected, is that -- can you still achieve that level of growth for the full year?
- CFO
Sarah, we are exactly on track with the goals we outlined for HR solutions for the full year. We are going to grow organically, we're going to expand margins and we're going to grow operating income in 2015.
- Analyst
Okay, but no clarity on to what extent you can grow operating income? Because it tends to be pretty lumpy quarter to quarter.
- CFO
We have said, Sarah, that we are going to be modestly profitable in healthcare exchanges for the full year 2015.
- Analyst
Great, thanks for the answers.
Operator
Next we have Paul Newsome of Sandler O'Neill.
- Analyst
Thanks for the call. I wanted to ask a little bit about the M&A outlook in general. And perhaps a little bit in specific in that it looks like you are actually divesting a little bit more than you are acquiring.
Is that typical of the trend? You're obviously do a lot of activity in the area. Could you give some general sense of what you think the direction of M&A is going for for Aon, what the outlook in general is for the sector?
- President & CEO
We would, Paul, not observe that trend. In fact, if you think back and just reflect on Aon over the last 10 years, we've done roughly $8 billion in acquisitions over that period of time. And we've said before, we are probably on track for $200 million to $500 million a year really adding content capability that we can expand across our portfolio. And we're looking to do that all the time.
To the extent that we divest, it really is around a disciplined amount of return of invested capital. We are deploying capital around the world, whether it's acquisitions or buyback or whatever. Organic investment around the discipline that Christa set up, and really gauging each investment around improving return on invested capital.
So to the extent we end up divesting something, it's because we've made a determination that it's better off in somebody else's hands on behalf of our clients. And we'll do that from time to time. But if you just think about just even in 2014, we did $500 million in acquisitions, and in the flood business, which we really love across the US or the benefits business in the UK. So we are excited about adding capability when it makes sense to add capability.
- Analyst
So we should assume it is a positive number in terms of the revenue impact for perspectively from acquisitions?
- President & CEO
I would say generally, if you look over the last 10 years, absolutely. It will be a positive number, again, it will be lumpy depending on what happens from quarter to quarter, but overall, absolutely positive.
- Analyst
And I apologize, one more exchange question. A lot of your peers have talked about a move towards more middle market and the exchange. So when you talked about doing deals to move them in that direction, what are your thoughts on that and is Aon also doing a similar thing?
- President & CEO
Again, we would start, Paul, with we love the health business. We love the opportunity to serve clients who face increasing pressures that are very real for them on promises they made to employees about trying to help them serve their families health needs and the increasing costs of that. Against that backdrop, we provided an absolute large range of solutions.
So remember, we actually do benefits for greater health benefits are than $10 million in the US alone, so we actually do more of this than anybody else and love that set of solutions. Exchanges end up being a set of solutions for a subset of that group, we like that as well.
And we've got exchanges large, medium, small. We've got exchanges that are fully insured and self insured. So we actually go through a range of different options depending on the client's situation.
But in the end, we are addressing the health needs of clients, which we believe we're going to continue to increase over time. And again, just love the platform. And have been very successful in growing pieces called the exchanges, but also in developing other areas as well.
- Analyst
Thank you, very much.
Operator
Brian Meredith of UBS.
- Analyst
A couple questions here. Greg, back on the healthcare solutions, has the discussion about the potential repeal of the Cadillac tax had any impact on the large corporate markets and companies thinking about changing? Not only do exchanges, but other types of plans?
- President & CEO
Not really, Brian. I think in the end, it was a great question, but really our clients are really looking at the pressure around costs overall. That could be an accelerant, but frankly, they're feeling the pinch anyway.
They are also feeling the pinch around volatility. So it really is, how do you help your employees meet their demands and what they need for the family, and do it in a way that is reasonably cost-effective, more pressure there. And do it in a way that it's not super volatile quarter to quarter for the company is very difficult.
And if we'd actually lower the cost curve over time, which we have been able to do in the exchange examples, that is hugely positive. 150, 200 basis points a year, that's hugely positive. So it really is that's the dialogue, the Cadillac tax ends up being out there, but it really hasn't been a driver.
- Analyst
Did you think it could be a catalyst though in the next, call it, next year or the year after as clients potentially face this Cadillac tax and it stays in place?
- President & CEO
I would say either way it is going to evolve, because the answer is a good one and it adds value and clients see that. Anything, by the way, that increases costs, the Cadillac tax or anything else, actually is a catalyst for change.
So to the extent that's out there and it happens, it's a catalyst for change. To the extent it doesn't, I wouldn't over play it either. As clients see opportunities to reduce costs, flatten the curve and reduce volatility, they're going to embrace it.
I would say clients that really innovate on the health side to drive it, it's-- to give you an example. We are working with a well-known new car company who is as excited about innovation and health for their employees as they are about frankly changing the way the world buys cars.
And against that, we've helped them create a solution that provides transparency, choice, accountability, a whole series of things for their employees And for them, it is as much about innovation and the idea of better health and better wellness as it is about costs, by the way, you can save an reduce volatility. So that is really the dynamic that is going on.
- Analyst
Great, thanks. And a quick question on the BPO business, I know margins have been pretty low there as you're investing in that business. What do the margins look like right now, and what is the outlook for those margins to improve? And how much of an impact did that have on the HR solutions margins overall?
- CFO
Margins are improving, Brian, but what I would say is, we are still at low single-digit margins. As you know historically, several years ago, the margins were negative. So they have improved, but we do believe that we will move from low single-digit margins to mid teens margins over time.
- Analyst
How quickly can that happen? Is it just simply just getting rid of some of these investments? Because for a long time, they have been low.
- CFO
We are continuing to improve margins every year, Brian, and clients today are an average of three to seven year contracts. So as clients increasingly choose software as a service options, our margins improve.
- Analyst
Got you. I just thought we might getting closer to the end of that three to seven years since when you bought Hewitt.
- CFO
Is progressing every year, Brian.
- Analyst
Okay, thanks.
Operator
Meyer Shields of KBW.
- Analyst
Thanks, good morning. Two quick questions if I can.
One, it looks like the average number of employees on the active exchange per company went down significantly. Is that because you are adding smaller companies, or did any companies from last year not renew?
- President & CEO
No, really this is -- again, remember we have been privileged. We've actually brought on board on the exchange front the largest ever on the exchange. And so almost by definition, as we continue to add clients, the average is going to go down.
By the way, the same is true on the retiree exchange, where we've added what was the largest client in history on the retiree exchange. So I wouldn't read too much into that, as we add clients, that average is invariably going to come down. We are not too worried about that. We're still though, in terms of the category, serving this category we think in a very unique way with a very unique set of options.
- Analyst
Okay, that's helpful. Are there any margin implications of adding smaller clients, besides the underlying trajectory improvement?
- President & CEO
No. For us in the end, we've seen overall positive trajectory, as Christa has described before, and we see opportunities here for improvement over time. And again, as I said, fundamentally, this is a solution which has actually proven to be quite effective for the category of clients large and medium, and small in fact. And we are excited about adding clients as makes sense for them, and as they elect to come on board.
- CFO
The other thing I would add is, the quicker we create a platform, we now are adding more and more products to be able to offer to employees. We've now got over 11 different products, it's not just medical, it's medical, dental, vision, short-term disability, long-term disability, health, pet insurance and others. So it becomes a platform for employees to really have a choice as to how they want to invest their dollars.
- President & CEO
And this is consistent on the exchange, as Christa is describing, there with the idea of a platform to serve. Similar to what we do across the overall health segment. Which is really, how to we actually serve clients in an effective way across a range of needs beyond a single product, and this just happens to be the platform to do that.
- Analyst
That's very helpful. I appreciate the detail. On the year-to-date basis, organic growth on the brokerage, how does that compare to overall global premium growth?
- President & CEO
Overall, if you look at year to date, give or take 2% overall, that's probably roughly in line we would say with overall premium growth globally. What you are getting to there is a great outcome. That it just really isn't about price, it's really about underlying demand. Our view is underlying demand in the risk world has continued to grow, that's going to be reflected in premiums which tend to increase year to year and we're roughly in live with that.
We are also doing things to bring new categories into play. So the work we've done, for example, in the reinsurance world, bringing reinsurance capital into the mortgage world actually creates net new markets for what we do overall. That's true in cyber, that's true in terrorism as well. So for us, we think this is a demand opportunity irrespective of what is happening in the macro price environment, and we're seeing it play out over time and we are benefiting from that.
- Analyst
Okay, that is what I was getting at. Thanks so much.
Operator
Next we have Kai Tan of Morgan Stanley.
- Analyst
Thank you. So first -- I have two questions. First question on the margin, it is pretty good you can maintain and improve your margin on the recent solutions given the 1% organic growth.
I wonder other driver (inaudible) be able to better manage expense? And also looking longer-term, if you look at risk solutions, the margin had been stable for about five years and the HR had been stable for four years. So is that still a pretty significant upside to your long-term aspiration goal. Just wonder if the [market] environment remained the same, what other key drivers within your control that we can see meaningful margin expansion in both segments?
- CFO
I think it's a great question, Hi, because one of the things we have been investing in, investments in data analytics, particular on the risk side. And they are enabling us to drive margin expansion at lower rates of growth. And what you're seeing is we absolutely invested disproportionately in our data and analytics business, particularly up and until 2012.
And what you are seeing in 2013, 2014 and 2015 are the return on those investments. And as we think about our margin growth from 22.7%, which is where we finished at year-end calendar -- or 22.9% year end 2014, to 26%. There are three big drivers of that margin expansion.
The first is the return on the investments we have made in data and analytics, which are substantial. And you're seeing that drive the majority of our expansion in 2013, 2014, and again this calendar year.
The second is the revenue engine, which is allowing us to get record levels of retention of existing clients and record levels of new business wins. And you have seen that in our business in calendar year 2015. And the third is the continued expense discipline across our [rid] solutions business, and we are on track for record margins in both segments in 2015.
- President & CEO
At that would be, Kai, at end of the day, where we want to be clear. Christa described the track for us to improve margins irrespective of the external environment. So we didn't talk about pricing, we didn't talk about inflation, we didn't talk about interest rates.
We anticipate and expect none of those. If any of those happen, those are substantial accelerants of our margin expansion, but we have been able to expand margin without any of that help with increased operating leverage in the business. So that is why we are comfortable, and this quarter has done nothing except for reinforce that comfort that we're going to improve margin in 2015, 2016, 2017 irrespective of the external environment.
- Analyst
So to be clear, the pace of the improvements, would that be similar to what we have seen in the last few years if the environment keeps the same?
- CFO
We're going to continue to make progress in margin every year.
- Analyst
Okay, that's great. And then my second question is on your capacity for buybacks. So the [bafrican] number is significant this quarter again. And if you are looking forward, if you achieve your $2.3 billion of free cash flow for 2017, which implies about $300 million a year increasing in free cash flow through 2017 from 2014.
And then the two variables then to drive your increased buybacks would be the emerging acquisitions, as well as the debt. You spoke about the acquisition side, but on the debt side, of your increasing capacity for you to issue on that, for example, if your EBITDA grew about $100 million a year, would you be able to increase the debt by $260 billion a year to maintain the 2.6 times leverage ratio, or you want to keep the debt, lower the leverage ratio going forward?
- CFO
Kai, it's a great question, and I think it gets to the heart of free cash flow growth for Aon and how we allocate capital. We expect double-digit free cash flow growth for the full year 2015.
We have obviously demonstrated 21% growth in free cash flow in the nine months year to date, and we are heading into our seasonally strongest cash flow growth quarter. So we feel really good about being able to grow free cash flow double digits this calendar year.
As we think about the capacity for buyback, you are absolutely right. It is the growth in free cash flow and it's the leverage. And as we think about leverage, we are absolutely committed to our current investment ratings, and therefore, as we grow EBITDA and as our -- pension unfunded liability comes down, we absolutely have the ability to increase leverage.
So that's the way we think about it. Then you could say, are we allocating this capital towards buyback, or are we allocating it towards M&A. And it is really about how we think about return on capital, which is on a cash-on-cash return.
And our highest return on capital use of cash today is buyback. Because we do believe we're substantially under valued, because many people still look at earnings growth and for us there's a very big disconnect between earnings growth and free cash flow growth. And so you have double-digit free cash flow growth to deliver $3.3 billion in 2017.
- Analyst
So you're comfortable with the 2.6 leverage ratio at these levels?
- CFO
Yes we are.
- Analyst
Thank you very much.
Operator
Elyse Greenspan of Wells Fargo.
- Analyst
A few questions. First on the tax rate, the legacy litigation at a benefit this quarter fro the second quarter of legacy litigation. Should we expect any benefit on the tax rate in the fourth quarter, or should we revert that -- we'll revert back to that 19% level?
- CFO
So the way that works is that legacy litigation that occurred in Q2 that had a positive benefit on the tax rate will impact the full year tax rate for 2015. So yes, it will show up again in Q4, Elyse, and then it will not repeat in 2016. And as I've said, the underlying operating rate is 19%, and that is the right rate to use for 2016.
- Analyst
Okay. And then shifting onto the private healthcare exchanges, the enrollment figures that you gave for 2016, I just want to make sure, are those just on the fully insured exchange? So the 55 accounts on the active exchange, does that compare to the 30 that you had on last year?
- President & CEO
This is overall what we put on the exchange, Elyse, and it is 1.4 million for 2015 into 2016, just as you described.
- Analyst
Okay. So what's the -- are you breaking out the self-insured versus the fully insured component?
- President & CEO
Look at that as an overall. We haven't broken those out explicitly. Basically, we increased the number of clients from 30 to 55 on the active exchange. The majority are fully insured, but we also have a number on the self-insured side as well.
- Analyst
Okay. And then in terms of thinking about the economics, Christa, I know you mentioned that you'll see modest positive earnings this year. And when we think through that, is that more of a function of the investments and the expenses on the exchanges going down as it gains greater scale, or growth in revenue? What's contributing -- which of either revenue or expenses is contributing to you guys hitting the inflection point this year and seeing positive earnings?
- CFO
Elyse, the way to think about it is the investments we've made are really operating expenses, so they are going to show up every year. And then as we get incremental participants enrolled, then our revenue increases which is how we get the scale to be modestly profitable this year and continued improvements in profitability in each year thereafter. So it is the revenue growth, Elyse.
- Analyst
Okay. And then lastly on the share repurchases, we saw that pick up this quarter from where you guys have been trending year to date. Did you move up any share repurchases that you had geared for the fourth quarter? What kind of -- anything more on just the pickup in the level in the third quarter and expectations for fourth quarter that you have?
- CFO
Elyse, what we said coming into the second half of the year was that share repurchase would be stronger in the second half of the year than the first half of the year. Because the second half of the year is our seasonally strongest cash flow half, and that is exactly what you have seen.
So we would expect -- Q4 is our strongest cash flow quarter. So as you think about share repurchases going forward, we would expect to continue to allocate capital based on the highest return on capital.
I would say as you think about hitting the $3.3 billion in free cash flow in 2017, you can assume that the share count is going to continue to trend down over that time period. So if you think about the $3.3 billion of cash divided by a share count, it is the highest return on capital opportunity we have.
- Analyst
Thank you, very much.
Operator
The next question is from Michael Nannizzi of Goldman Sachs.
- Analyst
Thanks so much. Just to go back to the cash question again here. If we go back to 2012 when we laid out the double cash by 2017, since that point, you have very clear tangible drivers of cash generation, the restructuring program, the production in pension contributions from freezing the pension plan, and then the reduction in tax payments from the lower tax rate.
So that gets us maybe, depending on what happens this year in the fourth quarter, maybe that gets us halfway there. I guess I'm just trying to understand, looking from here, do we have a line of sight into a chart similar like we have on page 11 in the presentation?
What gets us the rest of the 50% of the way to that $2.3 billion? Because it is just hard to understand what that is if it isn't going to be reaching those margin targets that you guys have laid out specifically by 2017. Thanks.
- CFO
It's a great question, Michael, because if you look at the pension restructuring and CapEx it is $230 million. You add a reduction in cash taxes of about $100 million or about $330 million, so you have got a gap. And the gap is really coming from operating income growth, both in revenue and margin expansion, so that will be absolutely a big driver of the free cash flow growth.
And the second is working capital improvements. Michael, if you look at 2011, our accounts receivable divided by revenue, so you get days sales outstanding, it was about 103 days sales outstanding in 2011. In 2014, that reduced to 85 days.
So you've basically got an improvement of 18 days in days sales outstanding over that four-year period, which on 2014 revenue is the equivalent of $575 million in cash from working capital. And what I would say is, we have got substantial improvements in working capital to come over the next five plus years. As we continue to improve the processes around Aon and improve our operating model and improve the collection of cash from customers and the payments to suppliers.
- Analyst
So from this point, it is really less about or it's going to be less about earnings and margins, and more about balance sheet optimization in order to extract that additional $500 million or $600 million of annual cash flow. Is that fair?
- CFO
No, actually. It's really about revenue growth and margin expansion. It's absolutely about operating income growth, so I did start there. So I would say there are two big drivers of cash flow growth other, there are really four big drivers of cash flow growth.
One is revenue and margin expansion driving operating income growth. Two is working capital improvements, which we believe is sustainable over multiple years. Three is the reduction in uses of capital on pension restructuring and CapEx, and four is reduced cash taxes. They're the four big drivers, and all four of them will contribute.
- Analyst
Okay. And then just if I could on healthcare exchanges. It sounds like you're getting closer to scale there. Do you have visibility or can you give some insight into what the model margins are on exchanges as you think about that relative to your benefits business?
Obviously, you've got still some investments in there, and you are probably not fully as scale. But how should we think about the trade off between your legacy benefits business and this new platform as you start to scale that up?
- President & CEO
As we've said before, as we bring this up online, it is going to be higher accretive to our margin currently, and certainly helps us and gets us on track and accretive to our 22% target. We are investing on behalf of clients, we're absorbing it in the P&L, we're still able to improve margins. And as we bring this on board and we continue to see adoption, it's going to reinforce our overall margin progress and margin improvements.
- Analyst
Okay. And then last of all on exchanges, I guess ADP is a large payroll company that has talked about building and exchange platform. What is the risk, if there is one, are those potential partners, are those potential competitors?
It is still somewhat unclear about how they are bringing people to the table and partners to the table and potentially competing in this space. How do you think about the potential encroachment either from new competitors or opportunity to partner with new partners like them? Thanks.
- President & CEO
Again, we would step back and say, we're actually operating in the health space, which is why we love this space so much. This is massive, and we would say largely broken. So this is one of the most important biggest sectors of the global economy, certainly in the US economy.
And our clients are begging an option or a set of options that can flatten the cost curve a bit, reduce volatility. And most important give employees better choice and better transparency, and hopefully a bit of accountability. Maybe even change their behavior and improve health overall.
So against that backdrop, we've brought a range of solutions. It is a massive vast ocean with lots of opportunities there. And the thing we love is we start with the fact that we actually already do this for 22 million Americans across the overall benefits spectrum, 10 million in health alone. So we have got tremendous access to the companies to have a great set of discussions.
And we would observe, by the way, when we first started talking about exchanges, most of the world said that no, they don't like them, that we should never have them. And then eventually everybody showed up with exchanges. And then we talked about the idea of actually maybe even putting the risk on an insurance balance sheet, let's call it, totally insured.
And everyone said, no, those are terrible too. And then eventually, everybody's got one of those as well. So our view is, there is going to be lots of folks coming to the floor here to try to serve this market.
It is an important market. And at the end of the day, we love our position, we feel very privileged to be where we are. But we also are very clear, we need to keep innovating, we need to keep improving, we need to keep investing behind and on behalf of our clients, because none of us have gotten our clients to a place where they really need to be going forward. And that relieves the aspiration.
- Analyst
Thank you so much.
Operator
Our next last question is from Benay Misquif of Sterne Agee CRT.
- Analyst
Most of my questions have been answered. Just one clarification on the working capital.
Christa, if you could help me understand how that works? And I believe you are asking clients to pay up slightly earlier, so curious about what impact it is having on client relationships? And also how much more of this working capital benefits can you squeeze out over the next couple of years?
- CFO
So really, Benay, the way this works is it is collecting that cash customers owe us. And I think historically, we've had a focus on revenue growth, and then on margin expansion and then really in the last four or five years cash flow. So I think we haven't had the discipline around the processes and the collections that we are now putting in place.
And I think it is allowing us to translate a dollar of revenue into free cash flow much more efficiently. So I would say it is both on that side. And then as we aggregate together our supplier spending, we are able to get better terms in terms of how we pay suppliers.
So both of those contribute to working capital. And I would say as we continue to bring together global Aon and improve our overall efficiency, we see substantial improvements in working capital over the next five years.
- President & CEO
And in many respects, Benay, philosophically to the cash piece, and it's worth spending a minute on this. We have brought what we believe is, it is not rocket science, but in the world of brokerage it is an innovation. No one has actually ever looked at the idea of how you translate operating income into cash.
It turns out we are not actually squeezing, we're actually just being slightly disciplined. And slight discipline means we have got a better engine to translate operating income into cash. And it turns out, it is massive.
And that is why we've got a set of structural changes between now and 2013, structural in pension, structural in restructuring, structural in tax, and structural in working capital. But again, aren't rocket science, if you're outside the brokerage world. But in our world, require a lot of energy, a lot to change, but when you do, it creates a tremendous benefit.
So for every dollar of operating profit we're generating, our translation into free cash flow is stronger and getting stronger, and that gets us to the $2.3 billion. I would highlight as Christa described before, we do not need to get to a 26% margin and a 22% margin in our targets to make $2.3 billion. In fact, if we achieve those margins, we'd be well above $2.3 billion.
So from our standpoint, we're focused on cash because it's important to our investors and important to us. It's an important bellwether on how much we can invest back into the business, and we are taking steps to improve that profile.
And the 21% in the first nine months, it just says hey, we're on track, and we are going to continue to do that. And I think importantly, as Christa described, we're going to be able to sustain that past 2017 and the $2.3 billion.
- Analyst
That's helpful. Just one numbers question on the tax rate. Christa, the fourth quarter, should we expect a 16% tax rate once again?
- CFO
The operating rate is going to be -- the underlying rate is really going to be 19%. And then I think it depends on the discrete items, and that's what you saw this quarter which made it lower.
- Analyst
Thank you.
Operator
Thank you. I would like to turn the call back to Greg Case for closing remarks.
- President & CEO
I appreciate everybody joining the call, and look forward to our discussion next quarter. Thanks very much.
Operator
That concludes today's conference. Thank you all for joining. You may all now disconnect.