Good morning, ladies and gentlemen. Welcome to the fourth quarter results teleconference for Travelers. We ask that you hold all questions until the completion of formal remarks, at which time you will be given instructions for the question and answer session. As a reminder, this conference is being recorded on January 22, 2019. At this time, I would like to turn the conference over to Ms. Abbe Goldstein, Senior Vice President of Investor Relations. Ms. Goldstein, you may begin.
Thank you. Good morning and welcome to Travelers' discussion of our fourth quarter 2018 results. Hopefully, all of you have seen our press release, financial supplement, and webcast presentation released earlier this morning. All of these materials can be found on our website at travelers.com under the Investors section. Speaking today will be Alan Schnitzer, Chairman and CEO, Dan Frey, CFO, and our three segment presidents, Greg Toczydlowski of Business Insurance, Tom Kunkel of Bond & Specialty Insurance, who is joining us remotely this morning, and Michael Klein of Personal Insurance. They will discuss the financial results of our business and the current market environment. They will refer to the webcast presentation as they go through prepared remarks. Then we will take questions. Before I turn the call over to Alan, I would like to draw your attention to the explanatory note included at the end of the webcast.
Our presentation today includes forward-looking statements, including as it relates to our discussion of our outlook. The company cautions investors that any forward-looking statement involves risks and uncertainties and is not a guarantee of future performance. Actual results may differ materially from those expressed or implied in the forward-looking statements due to a variety of factors. These factors are described under Forward-Looking Statements in our earnings press release and our most recent 10-Q and 10-K filed with the SEC. We do not undertake any obligation to update forward-looking statements. In our remarks or responses to questions, we may mention some non-GAAP financial measures. Reconciliations are included in our recent earnings press release, financial supplement, and other materials available in the Investors section on our website. Now I'd like to turn the call over to Alan Schnitzer.
Thank you, Abbe. Good morning, everyone. Thank you for joining us today. As we look back on 2018, we're pleased that we improved returns, grew our business, and delivered strong underlying underwriting profitability and investment results while returning significant excess capital to shareholders and taking great care of our customers. Our results benefited from ongoing strategic initiatives geared toward creating top-line opportunities and improving productivity and efficiency. Of course, our results were also impacted by a high level of catastrophe losses. Fourth quarter net income of $621 million, or $2.32 per diluted share, generated a return on equity of 10.9%. Core income was $571 million, or $2.13 per diluted share. Core return on equity was 10%. Net and core income were both impacted by almost $500 million of after-tax CAT losses.
Our full year core income increased by 19% to $2.4 billion, generating core return on equity of 10.7%. The fact that we were able to generate this level of profit and profitability with $1.4 billion in after-tax cat losses speaks to the earnings power of our franchise. Our consolidated underlying combined ratio for the fourth quarter improved to 91.1%, the lowest level since the first quarter of 2016, even after the impact on the quarter of a full year's worth of higher loss estimates in the commercial auto line, driven by bodily injury severity. Commercial auto has been a challenge for the industry and for us for some time, our most recent data reflects further deterioration. Greg will address in more detail what we've seen and how we're responding.
For the full year, our record earned premium of more than $27 billion in productivity and efficiency initiatives contributed to an after-tax underlying underwriting gain of $1.5 billion, the highest in more than a decade. Our successful and consistent investment strategy also contributed to our results. After-tax net investment income was up 15% for the quarter and 12% for the year. The underwriting gain and investment income also reflect the benefit of tax reform. These results, together with our strong balance sheet, enabled us to grow adjusted book value per share by 5% during the year after returning more than $2.1 billion of excess capital to shareholders, consistent with our long-standing capital management strategy. Turning to production, we remain very pleased with our performance in the market, with each of our business segments contributing to a 4% increase in net written premium for the quarter.
For the year, we grew net written premiums by 6% to a record $27.7 billion. Net written premiums in Business Insurance in the quarter increased by nearly $100 million or 3%, driven by historically high retention and positive renewal premium change. In our middle market business, retention reached a record fourth quarter high of 88%. We completed the rollout of our business centers and our commercial accounts business during the year. All eligible renewals and new business are now flowing through these centers, freeing up our local underwriters to spend more time with our agent and broker partners. For the year, commercial accounts delivered its highest level of new business in more than a decade. Renewal premium change in Business Insurance, including pure rate and exposure, was nearly 5% in the quarter, up over half a point compared to the same period last year and steady throughout 2018.
We achieved positive renewal premium change in all lines. In our Bond & Specialty business, net written premiums increased by 8% for the quarter, with continued strong production in both our management liability and surety businesses. In domestic management liability, we achieved record retention and new business for the full year. In Personal Insurance, net written premium growth in the quarter was strong at 5%, with both our agency auto and homeowners businesses contributing. Two years ago, in 2016, we had a $4 billion book of agency auto business with some profitability challenges. Today, it's a $5 billion business that meets our return expectations. Thanks to impressive execution by the team and an improved environment, we got there ahead of schedule. You'll hear more shortly from Greg, Tom, and Michael about our segment results.
To wrap it up, despite another year of elevated catastrophe losses, we achieved an 11% return on equity. That speaks to excellent underwriting execution and management of risk and reward across a diverse portfolio of businesses, our successful investment strategy, and our active approach to capital management. It also speaks to the dedication and commitment of our 30,000 employees. With a talented team, competitive advantages that set us apart, and an ambitious innovation agenda, along with very high respect for our shareholders' capital, we remain very well-positioned to continue to deliver leading results and meaningful shareholder value over time. With that, I'm pleased to turn the call over to Dan.
Thank you, Alan. Core income for the fourth quarter was $571 million, down from $633 million in the prior year quarter, and core ROE was 10%, down from 11.1%. The decrease in both measures from last year's fourth quarter resulted primarily from a higher level of catastrophe losses and a lower level of favorable prior year reserve development. Underlying results were strong as the consolidated underlying combined ratio of 91.1%, which excludes the impacts of cats and PYD, improved by 1.3 points from the prior year quarter. Recall that last year's fourth quarter underlying combined ratio was elevated by about half a point as a result of tax planning actions taken at that time. Our fourth quarter results include $610 million of pre-tax cat losses, driven by $453 million from the California wildfires in November and $158 million from Hurricane Michael in October.
Last year's fourth quarter cat losses of $499 million included favorable development of $157 million, primarily related to the hurricanes from the third quarter of 2017. PYD in the current quarter, for which I'll provide more detail shortly, was net favorable $167 million pre-tax, down from $293 million in the prior year quarter. Our pre-tax underlying underwriting gain of $578 million improved by 22% from $472 million in the prior year quarter, as increases in both Bond & Specialty and Personal Insurance were partially offset by a decrease in Business Insurance, which Greg will address in his comments. Pre-tax net investment income increased by 5% from the prior year quarter to $630 million, as increases in fixed income were partially offset by lower pre-tax returns in our non-fixed income portfolio compared to very strong performance in the prior year quarter.
Fixed income results benefited from the more favorable interest rate environment and an increase in average invested assets resulting from continued growth in net written premiums. After-tax NII increased by 15% to $535 million, benefiting from the lower U.S. corporate income tax rate. After-tax fixed income NII in the fourth quarter increased by $65 million compared to the fourth quarter of 2017, and we expect that 2019 fixed income NII will increase by approximately $20 million-$25 million per quarter compared to the corresponding periods of 2018, as we project that both the average level of invested assets and the average yield on the portfolio will be higher. All three segments experienced net favorable prior year reserve development in the fourth quarter. In Personal Insurance, recent accident years performed better than expected in the auto book.
In Bond & Specialty, we experienced better than expected loss development in the management liability book. In Business Insurance, net favorable PYD of $48 million pre-tax was driven by better than expected loss experience in domestic workers' comp, which was largely offset by unfavorable development in commercial auto and, to a lesser extent, general liability. Commercial auto unfavorable PYD in the quarter was $155 million pre-tax, resulting from elevated severity in recent accident years. In general liability, where the returns remain attractive, unfavorable PYD in the quarter reflected changes across several accident years and business units. There is no broad theme, with the largest impact related to a small number of claims from older years in our runoff book. For the full year, despite the adverse changes in commercial auto and the third quarter asbestos charge, net favorable prior year reserve development was $517 million pre-tax.
When our combined 2018 Schedule P is filed early in the second quarter, we expect it to show that excluding asbestos environmental, all accident years across all product lines in the aggregate and all product lines across all accident years in the aggregate developed favorably or had minor unfavorable development except for commercial auto and, as a result of the change in commercial auto, accident year 2017. Page 19 of the webcast provides information about our January 1st CAT treaty renewal. Our corporate CAT aggregate XOL treaty renewed on terms in line with the expiring treaty and continues to provide coverage for both single CAT events and the aggregation of losses from multiple CAT events. As you all know, the industry has experienced an elevated level of catastrophe losses in recent years.
In response, we have updated our actuarial model to reflect the actual results of recent years and to give more weight to recent years when determining our view of normal expectations. As a result, we have recognized a somewhat higher level of expected losses in our pricing and underwriting models. In further recognition of recent weather activity and ongoing uncertainty, for 2019, we have also added a new CAT aggregate XOL treaty, as described on slide 19. This treaty addresses qualifying PCS-designated events in North America for which we incur losses of $5 million or more, providing aggregate coverage of $430 million, part of $500 million of losses above an aggregate retention of $1.3 billion. Hurricane and earthquake events have a $250 million per occurrence cap. We believe this new treaty provides a reasonable level of protection at an appropriate price.
In terms of the accounting, there will be an impact on the underlying combined ratio in 2019 due to the effect of ceded premiums on total net earned premiums. The majority of any loss recoveries from this treaty will likely benefit our net catastrophe losses, which are excluded from underlying results, we expect about a half a point impact on the full-year underlying combined ratio, but a minimal impact on the full-year total combined ratio. The attachment point is $1.3 billion, we also expect that any recoveries would likely be recorded in the second half of the year, and accordingly, the impact on the combined ratio will likely be more pronounced in the early part of 2019. Of course, the actual effect on our total combined ratio for 2019 will be impacted by the level of PCS events we experience.
Turning to capital management, operating cash flows for the quarter of $948 million were again very strong. All our capital ratios were at or better than target levels, and we ended the quarter with holding company liquidity of approximately $1.4 billion. Interest rates decreased modestly during the fourth quarter. Accordingly, our net unrealized investment loss narrowed from $447 million after tax as of September 30th to $113 million after tax at year-end. Adjusted book value per share, which excludes unrealized investment gains and losses, was $87.27 at year-end, 5% higher than at the beginning of the year. We returned $375 million of capital to our shareholders this quarter, comprising share repurchases of $170 million and dividends of $205 million. For the year, we returned more than $2.1 billion of capital to our shareholders through dividends and share repurchases.
Consistent with our capital management strategy, that level of returned capital takes into consideration a variety of factors. For example, the increased level of capital in support of the nearly $2.8 billion of premium growth we have generated over the last two years, the amount of earnings, and contributions to the pension plan. You'll recall that we made a $200 million contribution in September for tax planning purposes. With that, I'll turn the microphone over to Greg for a discussion of Business Insurance.
Thanks, Dan. For the fourth quarter, Business Insurance produced $391 million of segment income, down from $637 million in the prior year quarter, bringing the full-year total to $1.64 billion, a 2% increase over 2017. Earnings for both the quarter and the year included the relatively high levels of catastrophe losses that Alan and Dan mentioned, as was the case in 2017. Earnings for both the quarter and the year were positively impacted by strong profitability in workers' comp, our biggest product line, as well as higher overall business volumes that resulted from recent earned premium growth and increased operating leverage that has reduced our expense ratio. Earnings were negatively impacted by a fourth-quarter after-tax charge of about $195 million, or about $245 million on a pre-tax basis, related to higher commercial auto bodily injury loss activity.
Of that amount, about $155 million pre-tax reduced net favorable prior year reserve development. The remaining $90 million pre-tax represents the impact to the 2018 accident year and incorporates re-estimations for the first three quarters of the year. The corresponding combined ratio impacts were approximately six and a half points on the segment combined ratio for the quarter and a little more than one and a half points on the segment combined ratio for the year. The impacts on the underlying combined ratio from the adverse auto adjustments were approximately two and a half points for the quarter and a little more than a half a point for the full year. As we've discussed with you, in recent years, we've reacted to higher commercial auto losses in different portions of our commercial auto book through various pricing, underwriting, and reserving actions.
During the recent quarter, data emerged that changed our view of the overall loss environment broadly across our commercial auto book. We saw more of an increase in the rate of attorney involvement than we had anticipated and a lengthening in the claim development pattern. A consequence, we are experiencing a higher level of bodily injury severity than we anticipated. We believe the factors we are experiencing are environmental, our primary plan of action going forward will be to push for more rate. We've mentioned in the past, the auto line is where we've been getting the most rate over the last couple of years, but we need more of it. It is important to remember that auto is typically part of an account solution for our business insurance customers. We generally provide them with some combination of workers' comp, property, general liability, and/or other coverages.
Accordingly, we will use our extensive data and analytics capabilities on an account-by-account basis to improve auto profitability as a line and as part of the overall profitability of our product portfolio. Turning back to the segment results, the underlying combined ratio of 95.4% for the quarter was 1.5 points higher than the prior year. The loss ratio was about three points higher than last year, driven by the 2.5 points from auto. The remaining half a point is due to higher non-weather loss activity in our international businesses, with the largest contributor to that coming from Lloyd's, partially offset by favorable variability and domestic loss activity. The expense ratio for the quarter improved by 1.5 points, with about half of that improvement coming from lower expense dollars and the other half coming from higher premium volumes.
Always, there are fluctuations in expenses from quarter to quarter, we'd point you to the full-year expense ratio as a better indication of our run rate. All in for the year, a 95.7 underlying combined ratio, which included large losses, which ran about a point over what we would view as a more normal level. Turning to top line and production, net written premium growth for the quarter was 3%, bringing the full-year total to $15 billion, almost $700 million, or 5% higher than in 2017. We're pleased with our continued progress with our strategic initiatives, and we remain encouraged with the feedback from our agent and broker partners that we're focused on the right priorities.
In terms of domestic production, we achieved strong renewal premium change of 4.8% in the quarter with renewal rate change of 1.6%, while retention remained high at 85%, a reflection of the quality of our book. New business of $488 million was up 3% from a year ago. We're pleased with these production results and continue to operate at a granular level of executing in our marketplace strategy to meet our return objectives with a thoughtful balance towards retaining our best business, improving pricing where it's needed, and pursuing attractive new business opportunities. Turning to the individual businesses. In Select, renewal premium change and renewal rate ticked up a bit while retention remained strong at 82%. New business was up 11% over the prior year quarter as we continue to leverage our investments in technology and workflow initiatives.
In middle market, renewal premium change was 4.5%, with renewal rate change consistent with last quarter at 1.5%, while retention remained historically high at 88%. As Alan said, a record for the fourth quarter. New business premiums of $281 million were down a bit from a strong level in the prior year quarter. In our core commercial accounts business, where our business center initiatives are now fully rolled out, new business was up 17% for the quarter, while full-year new business premiums of $561 million were at the highest level in over a decade. In this business, we're pleased that the business centers and our strategic investments are having the intended impact. Submission and quote activity are both up from the prior year, creating attractive top-line opportunities. To sum up, we feel terrific about our execution in the marketplace and confident about how we're positioned going forward.
Before I turn the call over to Tom to talk about Bond & Specialty results, I want to comment on our outlook for RPC and the underlying combined ratio, since we will not be filing our 10-K for a few weeks. We expect RPC will remain positive in 2019 and at the levels broadly consistent with 2018. We expect the underlying combined ratio for the full year 2019 will be lower than in 2018, which assumes that large losses, primarily in the property line, return to lower and more normal levels. Underneath that full-year outlook, we expect the underlying combined ratio improvements to come in the second through fourth quarters of the year. With that, I'll turn the call over to Tom.
Thanks, Greg. Bond & Specialty delivered another quarter of strong returns and growth. Segment income of $220 million nearly doubled from the prior year quarter, due primarily to higher underlying underwriting income and a higher level of net favorable prior year development. The improvement in underlying income reflects the impact of a single surety loss in the prior year quarter and higher business volumes. The underlying combined ratio was an excellent 78.1%. Net written premiums for the quarter were up 8%, driven by strong growth in our management liability business and solid surety production that was up slightly from the very strong prior year quarter. In our domestic management liability business, our focus continues to be on retaining our high-quality business and targeting rate where needed while pursuing attractive new business opportunities.
We are pleased that retention remained very strong at 89% for the quarter with a renewal premium change of 3.9 points. New business of $53 million was up 8% from the prior year quarter. These results reflect our extensive competitive advantages and solid marketplace execution. We are a leading franchise in our specialty markets with long-term customer, agent, and broker relationships across a national footprint. We've got exceptional talent and specialized industry expertise, extensive data, and advanced analytics. While we have leading platforms and robust products, we continue to invest in strategic product, marketing, and technology capabilities that will further extend our competitive advantages. Bond & specialty results were excellent. We continue to feel great about our growth, returns, and the opportunities that our strong market positions and competitive advantages present for the future.
In terms of our 2019 outlook as compared to 2018, we expect RPC for our domestic Management Liability business to remain positive and broadly consistent. For the segment, the underlying combined ratio to be broadly consistent. For Surety, we expect 2019 net written premium to be slightly higher than it was in 2018. Due to the inherent lumpiness in Surety production, going forward, we will no longer be including Surety net written premium in our outlook disclosure. Now I'll turn it over to Michael to discuss Personal Insurance.
Thanks, Tom, and good morning, everyone. In Personal Insurance for the quarter, segment income was $32 million, an improvement of $82 million over the prior year quarter, and our combined ratio of 102.6% improved 6.1 points. The lower combined ratio was driven by improved auto results, lower catastrophes, and higher net favorable prior year reserve development. For the full year, segment income of $297 million and a combined ratio of 100.6% are also better than the prior year, driven by the same factors I referenced for the quarter. Net written premium growth for the fourth quarter and full year was 5% and 7% respectively. Our premium growth helped us achieve a 30-basis-point improvement in our expense ratio for the full year. Agency automobile delivered another impressive quarter with a combined ratio of 95.3%, down 7.7 points from the prior year quarter, driven primarily by a lower underlying combined ratio.
Underlying margins continued to improve due to earned pricing exceeding loss trend and frequency remaining better than expected. These factors also resulted in favorable full-year loss adjustments in the quarter that further contributed to a better loss ratio than we would've expected. The quarter also benefited from higher net favorable prior year reserve development, partially offset by higher catastrophes. Recall that the prior year quarter included a benefit from the re-estimation of catastrophes, including Hurricane Harvey. Our full-year combined ratio for agency automobile of 94.2% was 10 points better than the prior year, and returns were well within targets on both an overall and an underlying basis. In light of these improvements, we continue to moderate renewal premium changes in this line as we seek to balance growth and profitability.
In agency homeowners and other, the fourth quarter combined ratio of 109.8% improved by more than five points despite three significant catastrophes, the Camp and Woolsey wildfires in California and Hurricane Michael. On an underlying basis, the combined ratio was 72.5%, or 2.3 points higher than the prior year quarter, driven by continued elevation in non-weather-related losses, which we noted in the prior quarter. The full-year combined ratio of 105.6% reflects a second consecutive year of very high catastrophe losses, which again accounted for approximately 24 points of the combined ratio. The full-year 2018 underlying combined ratio was 81.6%, 4.5 points higher than 2017, driven by higher levels of non-catastrophe weather and non-weather loss activity.
Consistent with comments we made earlier this year, given this recent catastrophe and non-catastrophe loss experience, and our assumption that some of this elevated loss pressure will persist, we continue to implement granular pricing and underwriting actions to manage our exposure and improve results. Turning to quarterly production, our agency automobile retention remained at a solid 84%, while renewal premium change of 6.3% continued to moderate consistent with our objectives, and new business was up 2% from the prior year quarter. In agency homeowners and other, we remain pleased with our momentum. Renewal premium change was 3.9%, nearly a point higher than a year ago. In addition, we delivered 6% growth in policies in force on strong retention of 86% and a 17% increase in new business.
Turning to our outlook for full-year 2019, we expect renewal premium changes for agency automobile to be positive but lower compared to 2018, while renewal premium changes for agency homeowners and other should be positive and higher compared to 2018. We expect the underlying combined ratio to be broadly consistent in agency automobile, agency homeowners and other, and for the Personal Insurance segment compared to 2018. This underlying combined ratio outlook includes the impact of the CAT aggregate XOL reinsurance treaty that Dan mentioned earlier. In the outlook section of our 10-K, we'll provide some quarterly texture underneath our full-year underlying combined ratio expectations, as quarter-to-quarter comparisons will likely vary throughout the year.
All in for the segment, in light of the improved results in auto and the actions we are undertaking in homeowners, we are pleased with our position and with the opportunity to profitably grow the business while continuing to invest in new capabilities and explore innovative opportunities in an ever-changing marketplace. With that, I'll turn the call back over to Abbe.
Thank you, Michael. With that, we're ready to open up for Q&A.
Thank you. At this time, I'd like to remind everyone, in order to ask a question, press star and the number 1 on your telephone keypad. We'll pause for just a moment to compile a Q&A roster. Our first question comes from the line of Jay Gelb from Barclays. Your line is open.
Thank you. First I want to touch base on the California wildfires. Can you give us some more perspective on how you compare your 2018 exposure to 2017, and whether you feel there's some type of public policy solution that needs to be addressed here, given the annual major exposure for the industry?
Yeah. Michael, you want to start?
I'll start with just sort of the view of the exposure, Jay, maybe give you a little bit of a view into a little more detail underneath what we mean when we talk about granular underwriting and pricing actions in response. As we look at the California wildfires, clearly, two significant years in a row of losses. I think, the discussion and the debate about the environment is pretty broad and pretty public. In terms of our response, we look at a handful of things. First, we look at our underwriting appetite and our view on terms and conditions in the marketplace. We have taken action. We had already taken action in 2017 to begin to restrict our new business underwriting appetite.
We've implemented further action that'll take effect later on this quarter in 2018 to further restrict that new business underwriting appetite, and also to instill new business underwriting procedures, for example, further inspections around defensible space as an example, that'll again, sort of tighten our new business underwriting appetite. We've also discussed with the Department of Insurance in California and begun to implement some non-renewal action in the state of California to address some of the more significant wildfire exposures in the portfolio. We are also in discussions with the Department about a filing to increase prices for homeowners in California. That gives you a little bit of a texture underneath our response to wildfires, in particular in the homeowners book.
That's helpful. Thank you. My second question was on the pace of share buybacks in the quarter. If I look back over the past six quarters, the average quarterly buyback is around $385 million, which was much higher than the $170 million in the fourth quarter. I'm just trying to figure out if fourth quarter lower pace of buybacks was due to the elevated CAT losses or if there's some other factor going on we should take into account when we project buybacks in the years ahead.
Yeah, Jay, it's Dan. I'll take that. Really no change in our underlying philosophy. It's a consistent approach to capital management. To look at any one quarter's worth of buybacks is probably a difficult way to look at it. We think about it more over time. As you suggested, and it would be true, in the fourth quarter, given the magnitude and the uncertainty related to the California wildfires, we did pull back a little bit on the level of share repurchase. If you look at 2018 as a whole, we generated $2.4 billion of core income. We returned a little bit more than $2.1 billion through dividends and share buybacks. Remember, we made an additional $200 million contribution of the pension plan at the end of the third quarter. Really no change there.
We're going to look at what level of capital we think we need to support the business, our projected levels of earnings going forward, and the cash needs that we have for things like the pension plan and react accordingly. What we buy back in shares is going to be an outcome of those things, not really an objective in and of itself.
Makes a lot of sense. Thank you.
Our next question comes from the line of Elyse Greenspan from Wells Fargo. Your line is open.
Hi, good morning. My first question, just going to the Business Insurance, the underlying margin outlook for 2019. If I go through some of your prepared remarks, you guys pointed to about one point of above normal level of large losses in 2018, with an offset partially there from that coming back of the additional aggregate reinsurance cover that you guys are purchasing. I know that's 50 basis points overall. I'm not sure if you can go into the specific details within Business Insurance as we think about the margin improvement this coming year. As you set the margin outlook, are you guys assuming commercial auto gets better or worse than compared to how you guys ended up booking that business in accident year 2018?
Elyse, good morning. It's Alan. Let me start, and Greg, you can jump in. We try not to get too quantitative on these outlooks. We try to keep it qualitative. There's a lot of estimates, a lot of judgments, and a lot of things from period to period that are going to cause volatility. We try to give you a
Order of magnitude and direction. Having said that, Greg did point out the essentially one point of property large losses that we would expect to return to a more normal level. We do expect to address commercial auto over time. A significant improvement in that is not otherwise reflected in the outlook for margins. The overall impact of the new cat treaty on the BI underlying is relatively small. I think in broad strokes, that gives you sort of the way to think about the underlying outlook.
Okay, great. My second question, in terms of thinking about the pricing outlook. You guys pointed to fairly stable renewal premium change in 2019. When you think about price versus exposure, can you give us a little bit of color of how you're seeing, potentially thinking of seeing the different components? In the fourth quarter, that's when we kind of annualized really the uptick in rates that we saw in 2017 following on the record CAT losses. Did you see anything different in the market as we started to annualize some of that price that would lead you to think maybe the push for price would go one way or the other in 2019?
Between the CAT activity, Elyse, and the 1/1 reinsurance renewals, we'll all see together over time, how that pricing plays out. We're not going to get any more granular on the outlook than what we have in the outlook section that'll be in the 10-K and that Greg shared. Overall, I would say that about five points of price change is pretty good change. If you look back at just the history of price change in BI, a plus five would be, in that historical context, pretty good. We've seen relatively stable allocation of that between exposure and rate. We feel pretty good about that overall.
Okay. Thank you. I appreciate the color.
Thank you.
Our next question comes from the line of Michael Zaremski from Credit Suisse. Your line is open.
Hey, thanks. First question in regards to the expense ratio improvement story. Would you say is this in its early innings, and could this be kind of a multi-year trend? It seems to have picked up in the second half of the year in terms of the improvement.
Well, what's definitely ongoing for us is the thoughtful and disciplined management of productivity and efficiency as a strategic effort, and that goes across the entire company, everything we do. You will see more activity from us in that regard. In terms of how it's going to come through in the numbers, you may or may not see that in the expense ratio. We've been saying for a while that our objective here is to create incremental operating leverage, and we think that's very helpful to us, but really in the sense that it gives us a lot of flexibility. We can let that fall to the bottom line in the form of a lower expense ratio. We can take those savings and reinvest it into important strategic initiatives, or we can decide to put it into price without compromising our return objectives.
It's definitely an ongoing objective for us across the company. I think Greg gave you a sense of what a run rate is for BI. I don't know, you want to, Dan?
Yeah. For the enterprise, I'd say similarly, if you look at the full-year expense ratio, that's a pretty good indication of where we're probably heading going forward. It has improved quite a bit over the last couple of years. I think we've reached a level that we're more happy with. As Alan said, we'll continue to focus on productivity and efficiency, but I wouldn't expect to see a continued level of dramatic decrease in the expense ratio from the levels we're at now.
Okay, great. My last follow-up question is in regards to workers' comp, where margins remain healthy. If we think about work comp pricing, is that expected to become more or less of a headwind as 2019 progresses? Maybe you could also update us on loss cost trends in comp. Thanks.
Yeah. Workers' comp, it's been under some pricing pressure, completely rational given where the profitability of the line has been. We're not going to break out pricing outlook by line. We give it to you for the segment. The profitability continues to be good, generally speaking, we would expect continued pressure in the comp line. We've got no change in commentary on workers' comp loss trend from what we shared with you last quarter, which is to say that frequency and severity, those are selections. Those are picks for us that go into loss ratios. Data comes in over time, and you look at reported activity over time, and you compare that to what your selections are and decide if there's anything you're seeing that requires you to move off that.
As we shared last quarter, and we would reiterate again, we're not seeing anything in the data that causes us to move off our loss picks.
Thank you.
Our next question comes from the line of Kai Pan from Morgan Stanley. Your line is open.
Thank you, and good morning. My first question on these are new aggregated reinsurance program. How much your cat loss would be in 2017 and 2018 if this program is applied retroactively?
Yeah, Kai. We looked at modeling what things would look like going back a number of years, and in particular, the last two years. Probably not surprisingly, given the elevated level of cats, we would've seen a full recovery under the treaty in each of the last two years.
Is that safe to assume your core loss ratio will be 50 basis points higher given the new aggregate cover, but your normalized cat loss will be 50 basis points lower going forward?
Yeah. I wouldn't say that's an exact offset. I think if you go back to my comments, it's definitely about a half a point on the underlying combined ratio with the mitigating factor on the overall normal cat expectation to get us back to a pretty de minimis impact on the combined ratio all in if we had a normal year of cats, which as you know in the last seven years we haven't.
Okay. In other words, if the cats this year come in lighter than your normal, the lost combined ratio will be worse than in the normal year.
The combined ratio would be worse because we'd have ceded away premiums and had no recovery. Correct.
Okay, great. My second question on personal [line site] and your prior guidance for 2019 was improvements in the underlying margin in both homeowners as well as auto book. Michael just gave guidance for 2000, new guidance 2019 pretty much consistent with 2018. Is that because 2018 actually improved better than you were previously expected, or you are reinvesting the business for growth?
Sure, Kai. It's Michael. It's actually a little bit of both, right? If you think about auto came in better than we expected, a broadly consistent outlook just reflects the update of the actual results compared to the outlook. On the property side, it's a little bit of a change in the outlook. Again, we've been talking about catastrophes and non-catastrophe weather and non-weather loss experience and talking about the fact that we continue to put more weight on more recent periods, as Dan mentioned. The broadly consistent outlook for property is partly a reflection of that, as well as the impact of the accounting of the new cat ag treaty, which as Dan just talked about, is a drag on underlying and in particular impacts the property line. Those are kind of the pieces.
Okay, great. Well, thank you so much.
Thank you.
Our next question comes from the line of Amit Kumar from Buckingham Research. Your line is open.
Thanks. Good morning. Maybe just a couple of quick questions for Michael Klein. Number one, if you go back, I guess to Alan's opening remarks, it seems like a lot of the work which was needed in personal auto has been done. I think the comment was that we got there ahead of expectations. Maybe just update us on the loss cost trend environment out there and maybe the trajectory of rate filings.
Sure, Amit. I think loss cost trend fairly consistent with what we've talked about, right? We see continued severity trend, particularly in collision and physical damage, increased cost to repair vehicles. Again, many of those dynamics we see as being relatively consistent with what we would have talked about a quarter ago. There's been some commentary about a little bit less pressure on bodily injury loss cost trend in the environment. Again, I think when you put it all together and combine it with our view on frequency, I would say it's consistent with Alan's comments earlier of we have a pick, we observe results, we sort of see most of that as variation around the loss cost trend we've estimated. Don't see a significant change in our loss trend outlook there.
In terms of outlook for price change going forward, again, our RPC outlook for auto is that RPC will remain positive but be lower in 2019 than it was in 2018.
That's helpful. The only other question I had was on the press release on Lyft. I think Lyft has 1.4 million or so drivers. I was curious if you could just maybe broadly talk about this opportunity, how we as outsiders should sort of handicap this going forward. Thanks.
Yeah. Amit, on Lyft, we think it's an exciting opportunity for us to participate in a changing economy. It's a service offering for them. We wouldn't expect from an economic perspective for it to meaningfully move the numbers in the near term. It's a great partner, and we're excited to work with them and excited to bring our leading claim capabilities to benefit for them.
Any thoughts on expanding into one of their TNCs down the road?
We don't have anything to announce at the moment. We're always thinking about whether there are opportunities for us to participate in an evolving economy, we'll continue to do that as we think about innovation and what insurance means in a changing world.
Got it. I'll stop here. Thanks for the answers and good luck for the year.
Thank you.
Thanks. Our next question comes from the line of Brian Meredith from UBS. Your line is open.
Yes, thanks. A couple quick questions here for you. First, just going back to the cat loads or the cat treaty that Kai was talking about. Is a simple way to think about this kind of going forward, should we kind of assume a $1.3 billion cat load for you guys? Is that kind of a good way to think about it?
Hey, Brian, it's Dan.
I'll say we don't give earnings guidance. We won't give guidance on the specific pieces of the components that go into earnings. You could see historically, we'll disclose from time to time, in the proxy what our expected level of catastrophes had been on sort of a backwards-looking basis. You should take that number and probably think about it trending up over time for two reasons. One is we've seen growth in the premium volume and the overall exposure level in the business. Two, as we mentioned in my comments, a little bit more weight on recent periods that gives us a bit of an uptick in terms of our view of each dollar of those premiums that would need to go into CAT. I'm going to avoid giving a specific number.
Got you. Great. My second question, I'm just curious. You guys have had really good, strong growth, new business growth in your Select Business, small commercial. I'm just curious, does that have any pressure on your underlying loss ratios when you're seeing that type of new business growth?
Hey, Brian, this is Greg. Yeah. In the Select Business, you can see the 11% new business growth year-over-year. We feel terrific about that growth. We've been spending quite a bit of investment in the technology and the workflow and the product management across all of the Select Business. You can see that the quality of the book looks really good with really strong retentions in the 82, 83 range. We haven't seen any meaningful deterioration in the underlying based on that new business.
Great. Like in auto, you'll see that tenure impact. You don't get that in small commercial.
Not as much just because you have the comp, you have the property, the GL and the auto in addition to it. Yep.
Makes sense. Thank you.
Our next question comes from the line of Ryan Tunis from Autonomous. Your line is open.
Hey, thanks. Good morning. First question, just for Alan. Looking at the 95.7 underlying combined ratio in Business Insurance, we factor in some elevated large loss activity. You throw in kind of a normal CAT load in the three to three and a half point range. It feels like we're running at a normalized level here of like 98%, which is only a 2% underwriting margin. It doesn't feel like a double-digit ROE. I'm curious if there's a level on the combined ratio where you'd be looking to kind of hold the line, if there's a place we should be thinking about where you'd get a little bit more of a sense of urgency around rate increases. Thanks.
Yeah. Ryan, I'm not going to get into calculating those returns with you. Clearly there's been some headwinds in pockets of BI, right? We've talked about the commercial auto, we've talked about the large losses. Greg mentioned today some of the pressure outside the United States and the largest piece of that coming from Lloyd's. There are some aspects of that in which we would expect improvement over time. We continue to get the five points of rate. There are margin opportunities outside of the pure rate trend dynamic. Again, the BI large losses outside the U.S., commercial auto, the fixed income NII helps as those rates are where they are and the bond portfolio turns over. Again, you've heard us talk about expense leverage. That's been pretty good. Just in terms of earnings dollars, the volume helps as well.
We're not feeling badly at all about where the returns are or underlying basis and where they're trending. If you take a step back and look at the whole company, Ryan, you could do this math as well as we do. If you take out prior year development and you put in whatever you think is normal for CATs, you get a return that's somewhere in the low double digits. Given where the 10-year treasury is today, again, that doesn't feel altogether bad to us, particularly with some opportunities we would see going forward. One of the benefits of having a company this size is you've got a diversified portfolio of businesses. We always feel a sense of urgency around here. There's no question about that. We are at the heart of who we are optimizers. Everything is not perfect.
We're going to work with a sense of urgency to optimize it. There's no sense at all here that there are problems.
Ryan, one thing I would add, this is Greg, is when you do that math, keep in mind that we do have different combined ratio targets depending on what the net investment income is generated based on those product lines. Think workers' comp, where we have the largest weight, where we could run a higher combined ratio relative to a shorter tail line like property. I'd just ask you to keep that in mind also when you do that math.
Understood. My follow-up is, I get the commercial auto, the increased litigiousness, more lawyer involvement. What's not completely clear to me is why that wouldn't translate to some elevated trend in the other liability lines. Just curious, what gives you guys comfort that the things you're seeing in auto are auto-specific, and we shouldn't be seeing more broadly in general liability?
Yeah. Ryan, we certainly watch that carefully. Just to walk you through the lines in our thinking on it. You've got GL. Think GL large for a second, excess umbrella, and I would put management liability in this group, too. You already have very high levels of representation in those claims. That's, again, already a high percentage, already pre-active there.
On the smaller side, the GL small, we are seeing a little bit more of the attorney rep, it doesn't seem to be quite as active as it is in the auto. We would just speculate that's probably not as attractive of business opportunity for the plaintiffs bar. You've got a much more varied portfolio of claims there, harder to make the case in many cases. It's just not as low-hanging fruit, at least for now. When you get into the really small, when you see the liability component of CMP, again, we have seen the pressure there. This theme, in other words, does cross the liability lines but to a lesser degree than we see in auto.
Thank you.
Our next question comes from the line of Meyer Shields from KBW. Your line is open.
Hi. Pardon me. I'm probably beating on a dead horse here. When you discuss the impact on the core loss ratio from the incremental treaty, that's completely separate from the one point of elevated large cat property losses. Do I have that right?
Yeah, two totally separate topics.
Okay. Second, the 50 basis point increase that you mentioned, that's not compared to 2018. That's compared to what 2019 would be otherwise. Is that fair?
It is compared to what 2019 would otherwise have been. Correct.
Okay, great. Thank you so much.
Our next question comes from the line of Larry Greenberg from Janney Montgomery Scott. Your line is open.
Hi. Good morning. Thank you. Just on investment income, wondering if there's anything to say about non-fixed income in the first quarter given the volatility in equity markets and fixed income markets in the fourth quarter. Just given some of the spread widening that took place in the fourth quarter, have you done any asset reallocations given some of that volatility or what some might view as opportunity?
Hi, Larry. It's Bill Hyman. Let me take them in reverse order. With respect to the second question, we haven't really changed our strategy. We regard increased spreads, as you say, as opportunity, assuming our credit judgment is good, which historically it has been. As you know, the yield on the 10-year treasury dropped from 3.06 at the end of the quarter to about 2.69 at the end of the year. It's back up to about 2.75. That's been partly compensated for by spread widening. We're still pretty comfortable with what we're seeing out there. In returns of private equity, we occasionally make internal projections of what we think the portfolio will throw up, and we have been notoriously inaccurate. We're generally far too pessimistic.
I agree that the developments in public equity markets in the fourth quarter, taken alone, wouldn't augur well for 2019, but we've seen similar situations where developments like that have been followed by perfectly good years. Your guess is probably as good as ours.
Thank you.
We have time for one more question. Your next question will come from the line of Yaron Kinar from Goldman Sachs. Your line is open.
Thanks for allowing me to sneak one in. Just want to go back to Business Insurance and the underlying combined ratio there. I think you said that you had about a one percent point of non-CAT large losses in 2018. I think that was roughly the same number that you had in 2017. If I look at the underlying combined ratio, it seems like there was a little bit of deterioration year-over-year. Maybe even if I adjust for the commercial auto, it's flat to slightly worse. Can you maybe talk about what is driving that this year, and what gives you the confidence that 2019's numbers would look better?
Hey, Yaron, this is Greg. Yeah, number one, you're correct that we do our best job possible of trying to normalize our large losses, and that's how we price and manage the business. We were over expectations in 2017, and as I disclosed in my prepared comments, we were also over our normal expectations for 2018. That was roughly the one point. The difference, and maybe a point to the full-year underlying combined ratio, where you can see an 80 basis points difference between the full year 2017 and the full year 2018. Again, in my prepared comments, I mentioned auto driving a little bit more than a half a point there. The international business is also driving about a little more than half a point, and that's predominantly driven based on the Lloyd's business.
We had some, as I disclosed, some favorable expense activity that offsets some of that. Those are all the pieces that get you there.
If you expect the expense ratio to maybe not improve to the same magnitude in 2019, and you still expect some improvement in 2019 for the overall underlying combined ratio, can you maybe talk about where that improvement would be coming from given the current loss trends?
Basically that one point of large losses.
Okay. Then maybe a quick one on the prior year development. It sounds from the scripted comments that the slowdown in net prior year development, favorable development, was really driven by an increase in adverse development and not so much by maybe a decrease in gross favorable development. Is that fair?
Let me just start, then I'll let you go, [Dave]. The question almost implied that there's a trend in prior year development. There is no trend in prior year development. Our obligation at the end of every quarter is to come up with management's best estimate, and we do that. Then every quarter, we go through the process of reevaluating our reserves and making adjustments where we feel like we need to. For any given period, the level of prior year development is just the net of those adjustments to best estimates.
I'd echo that, which is why I think we're pretty careful to always characterize it as net favorable prior year reserve development or net unfavorable prior year reserve development because there are business lines and accident years that go both ways. If you step back and look at the full year, a little more than a half a billion of pre-tax net favorable prior year reserve development, not that big in the scheme of the balance sheet. If you look at the right side of the balance sheet, you're seeing loss and loss adjustment expense reserves of around $50 billion. We're pretty good at estimating losses, but every quarter we're going to update and refine them.
Got it. Thank you so much.
I'll now turn the call back over to Ms. Goldstein for closing remarks.
Thank you all for joining us today. As always, if you have any follow-up questions, please reach out to us in investor relations, and have a good day. Thanks.
This concludes today's conference call. You may now disconnect.