Claim and Claim Adjustment Expense Reserves | CNA’s property and casualty insurance claim and claim adjustment expense reserves represent the estimated amounts necessary to resolve all outstanding claims, including incurred but not reported (“IBNR”) claims as of the reporting date. CNA’s reserve projections are based primarily on detailed analysis of the facts in each case, CNA’s experience with similar cases and various historical development patterns. Consideration is given to historical patterns such as claim reserving trends and settlement practices, loss payments, pending levels of unpaid claims and product mix, as well as court decisions and economic conditions including inflation and public attitudes. All of these factors can affect the estimation of claim and claim adjustment expense reserves. Establishing claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves for catastrophic events that have occurred, is an estimation process. Many factors can ultimately affect the final settlement of a claim and, therefore, the necessary reserve. Changes in the law, results of litigation, medical costs, the cost of repair materials and labor rates can affect ultimate claim costs. In addition, time can be a critical part of reserving determinations since the longer the span between the incidence of a loss and the payment or settlement of the claim, the more variable the ultimate settlement amount can be. Accordingly, short-tail claims, such as property damage claims, tend to be more reasonably estimable than long-tail claims, such as workers’ compensation, general liability and professional liability claims. Adjustments to prior year reserve estimates, if necessary, are reflected in the results of operations in the period that the need for such adjustments is determined. There can be no assurance that CNA’s ultimate cost for insurance losses will not exceed current estimates. Liability for Unpaid Claim and Claim Adjustment Expenses The table below reconciles the net liability for unpaid claim and claim adjustment expenses to the amount presented in the Consolidated Balance Sheets. December 31 2018 (In millions) Net liability for unpaid claim and claim adjustment expenses: Property & Casualty Operations $ 14,353 Other Insurance Operations (a) 3,612 Total net claim and claim adjustment expenses 17,965 Reinsurance receivables: (b) Property & Casualty Operations 1,605 Other Insurance Operations (c) 2,414 Total reinsurance receivables 4,019 Total gross liability for unpaid claims and claims adjustment expenses $ 21,984 (a) Other Insurance Operations amounts are primarily related to long term care claim reserves, which are long duration insurance contracts, but also include amounts related to unfunded structured settlements arising from short duration insurance contracts. (b) Reinsurance receivables presented do not include reinsurance receivables related to paid losses. (c) The Other Insurance Operations reinsurance receivables are primarily related to A&EP claims covered under the loss portfolio transfer. The following table presents a reconciliation between beginning and ending claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves of Other Insurance Operations. Year Ended December 31 2018 2017 2016 (In millions) Reserves, beginning of year: Gross $ 22,004 $ 22,343 $ 22,663 Ceded 3,934 4,094 4,087 Net reserves, beginning of year 18,070 18,249 18,576 Net incurred claim and claim adjustment expenses: Provision for insured events of current year 5,358 5,201 5,025 Decrease in provision for insured events of prior years (179 ) (381 ) (342 ) Amortization of discount 176 179 175 Total net incurred (a) 5,355 4,999 4,858 Net payments attributable to: Current year events (1,046 ) (975 ) (967 ) Prior year events (4,285 ) (4,366 ) (4,167 ) Total net payments (5,331 ) (5,341 ) (5,134 ) Foreign currency translation adjustment and other (129 ) 163 (51 ) Net reserves, end of year 17,965 18,070 18,249 Ceded reserves, end of year 4,019 3,934 4,094 Gross reserves, end of year $ 21,984 $ 22,004 $ 22,343 (a) Total net incurred above does not agree to Insurance claims and policyholders’ benefits as reflected on the Consolidated Statements of Income due to amounts related to retroactive reinsurance deferred gain accounting, uncollectible reinsurance and loss deductible receivables and benefit expenses related to future policy benefits, which are not reflected in the table above. Reserving Methodology In developing claim and claim adjustment expense (“loss” or “losses”) reserve estimates, CNA’s actuaries perform detailed reserve analyses that are staggered throughout the year. Every reserve group is reviewed at least once during the year, but most are reviewed more frequently. The analyses generally review losses gross of ceded reinsurance and apply the ceded reinsurance terms to the gross estimates to establish estimates net of reinsurance. Factors considered include, but are not limited to, the historical pattern and volatility of the actuarial indications, the sensitivity of the actuarial indications to changes in paid and incurred loss patterns, the consistency of claims handling processes, the consistency of case reserving practices, changes in CNA’s pricing and underwriting, pricing and underwriting trends in the insurance market and legal, judicial, social and economic trends. In addition to the detailed analyses, CNA reviews actual loss emergence for all products each quarter. In developing the loss reserve estimates for property and casualty contracts, CNA generally projects ultimate losses using several common actuarial methods as listed below. CNA reviews the various indications from the various methods and applies judgment to select an actuarial point estimate. The carried reserve may differ from the actuarial point estimate as the result of CNA’s consideration of the factors noted above as well as the potential volatility of the projections associated with the specific product being analyzed and other factors affecting claims costs that may not be quantifiable through traditional actuarial analysis. The indicated required reserve is the difference between the selected ultimate loss and the inception-to-date Paid development Incurred development Loss ratio Bornhuetter-Ferguson using premiums and paid loss Bornhuetter-Ferguson using premiums and incurred loss Frequency times severity Stochastic modeling For many exposures, especially those that can be considered long-tail, a particular accident or policy year may not have a sufficient volume of paid losses to produce a statistically reliable estimate of ultimate losses. In such a case, CNA’s actuaries typically assign more weight to the incurred development method than to the paid development method. As claims continue to settle and the volume of paid loss increases, the actuaries may assign additional weight to the paid development method. For most of CNA’s products, even the incurred losses for accident or policy years that are early in the claim settlement process will not be of sufficient volume to produce a reliable estimate of ultimate losses. In these cases, CNA may not assign any weight to the paid and incurred development methods. CNA may use the loss ratio, Bornhuetter-Ferguson and frequency times severity methods. For short-tail exposures, the paid and incurred development methods can often be relied on sooner, primarily because CNA’s history includes a sufficient number of years to cover the entire period over which paid and incurred losses are expected to change. However, CNA may also use the loss ratio, Bornhuetter-Ferguson and frequency times severity methods for short-tail exposures. For other more complex reserve groups where the above methods may not produce reliable indications, CNA uses additional methods tailored to the characteristics of the specific situation. Certain claim liabilities are more difficult to estimate or have differing methodologies and considerations which are described below. Mass Tort and A&EP Reserves CNA’s reserving methodologies for mass tort and A&EP are similar as both are based on detailed reviews of large accounts with estimates of ultimate payments based on the facts in each case and CNA’s view of applicable law and coverage litigation. Other Insurance Operations Other Insurance Operations includes CNA’s run-off CNA maintains both claim and claim adjustment expense reserves as well as future policy benefit reserves for policyholder benefits for CNA’s Other Insurance Operations. Claim and claim adjustment expense reserves consist of estimated reserves for long term care policyholders that are currently receiving benefits, including claims that have been incurred but are not yet reported. In developing the claim and claim adjustment expense reserve estimates for the long term care policies, CNA’s actuaries perform a detailed claim experience study on an annual basis. The study reviews the sufficiency of existing reserves for policyholders currently on claim and includes an evaluation of expected benefit utilization and claim duration. CNA’s recorded claim and claim adjustment expense reserves reflect management’s best estimate after incorporating the results of the most recent study. In addition, claim and claim adjustment expense reserves are also maintained for the structured settlement obligations. Both elements of the Other Insurance Operations reserves are discounted as discussed in Note 1. Gross and Net Carried Reserves The following tables present the gross and net carried reserves: Property Other and Casualty Insurance December 31, 2018 Operations Operations Total (In millions) Gross Case Reserves $ 6,671 $ 4,724 $ 11,395 Gross IBNR Reserves 9,287 1,302 10,589 Total Gross Carried Claim and Claim Adjustment Expense Reserves $ 15,958 $ 6,026 $ 21,984 Net Case Reserves $ 6,063 $ 3,460 $ 9,523 Net IBNR Reserves 8,290 152 8,442 Total Net Carried Claim and Claim Adjustment Expense Reserves $ 14,353 $ 3,612 $ 17,965 December 31, 2017 (In millions) Gross Case Reserves $ 6,913 $ 4,757 $ 11,670 Gross IBNR Reserves 9,156 1,178 10,334 Total Gross Carried Claim and Claim Adjustment Expense Reserves $ 16,069 $ 5,935 $ 22,004 Net Case Reserves $ 6,343 $ 3,302 $ 9,645 Net IBNR Reserves 8,232 193 8,425 Total Net Carried Claim and Claim Adjustment Expense Reserves $ 14,575 $ 3,495 $ 18,070 Net Prior Year Development Changes in estimates of claim and claim adjustment expense reserves, net of reinsurance, for prior years are defined as net prior year loss reserve development (“development”). These changes can be favorable or unfavorable. The following table and discussion presents detail of the development in CNA’s Property & Casualty Operations: Year Ended December 31 2018 2017 2016 (In millions) Medical professional liability $ 47 $ 30 $ 9 Other professional liability and management liability (127 ) (126 ) (14 0) Surety (70 ) (84 ) (6 3) Commercial auto 1 (35 ) (4 7) General liability 32 (24 ) (6 5) Workers’ compensation (32 ) (63 ) 14 5 Other (32 ) (6 ) (12 7) Total pretax (favorable) unfavorable development $ (181 ) $ (308 ) $ (28 8) Favorable net prior year loss reserve development of $19 million, $72 million and $46 million was recorded for Other Insurance Operations for the years ended December 31, 2018, 2017 and 2016. The favorable net prior year loss reserve development for the year ended December 31, 2018 was driven by lower than expected claim severity. Development Tables For CNA’s Property & Casualty Operations, the following tables present further detail and commentary on the development reflected in the financial statements for each of the periods presented. Also presented are loss reserve development tables that illustrate the change over time of reserves established for claim and allocated claim adjustment expenses arising from short duration insurance contracts for certain lines of business within CNA’s commercial property and casualty insurance operations (“Property & Casualty Operations”). Not all lines of business are presented based on their context to CNA’s overall loss reserves, calendar year reserve development, or calendar year net earned premiums. Insurance contracts are considered to be short duration contracts when the contracts are not expected to remain in force for an extended period of time. The Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative net incurred claim and allocated claim adjustment expenses relating to each accident year at the end of the stated calendar year. Changes in the cumulative amount across time are the result of CNA’s expanded awareness of additional facts and circumstances that pertain to the unsettled claims. The Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative amount paid for claims in each accident year as of the end of the stated calendar year. The Net Strengthening or (Releases) of Prior Accident Year Reserves tables, reading across, show the net increase or decrease in the cumulative net incurred accident year claim and allocated claim adjustment expenses during each stated calendar year and indicates whether the reserves for that accident year were strengthened or released. The information in the tables is reported on a net basis after reinsurance and does not include the effects of discounting. The information contained in calendar years 2017 and prior is unaudited. To the extent CNA enters into a commutation, the transaction is reported on a prospective basis. To the extent that CNA enters into a disposition, the effects of the disposition are reported on a retrospective basis by removing the balances associated with it. The amounts reported for the cumulative number of reported claims include direct and assumed open and closed claims by accident year at the claimant level. The number excludes claim counts for claims within a policy deductible where the insured is responsible for payment of losses in the deductible layer. Claim count data for certain assumed reinsurance contracts is unavailable. In the loss reserve development tables, IBNR includes reserves for incurred but not reported losses and expected development on case reserves. 2018 Unfavorable development in medical professional liability was primarily due to higher than expected severity in accident years 2014 and 2017 in CNA’s hospitals business. In addition, there was higher than expected frequency and severity in aging services in accident years 2014 through 2017 combined, partially offset by lower than expected frequency in accident year 2015. Favorable development in other professional liability and management liability was primarily due to lower than expected claim frequency in recent accident years related to financial institutions and professional liability errors and omissions (“E&O”), favorable severity in accident years 2015 and prior related to professional liability E&O and favorable outcomes on individual claims in financial institutions in accident years 2013 and prior. Favorable development in surety was due to lower than expected loss emergence for accident years 2017 and prior. Unfavorable development in general liability was driven by higher than expected claim severity in unsupported umbrella in accident years 2013 through 2016. Favorable development in workers’ compensation was driven by lower frequency and severity experience and favorable impacts from California reforms. Favorable development in other coverages was driven by lower than expected claim severity in catastrophes in accident year 2017 for property in Commercial, better than expected frequency in the liability portion of the package business in Canada and general liability in Europe in casualty and better than expected large loss frequency in the energy book in accident year 2017, as well as a reduction in incurred losses within the Europe marine discontinued portfolio in energy and marine and lower than expected frequency in accident years 2015 and prior in Europe in healthcare and technology for International. This was partially offset by unfavorable development primarily driven by higher than expected severity in Canada and higher than expected frequency in Hardy, both in accident year 2017 in property and increased loss severity in the accident year 2017 in Europe professional indemnity in specialty for International. 2017 Unfavorable development in medical professional liability was primarily due to continued higher than expected frequency in aging services and higher than expected severity for hospitals in recent accident years. This was partially offset by favorable development in hospitals in prior accident years as well as favorable development related to unallocated claim adjustment expenses. Favorable development in other professional liability and management liability was primarily due to favorable settlements on closed claims and a lower frequency of large losses for accident years 2011 through 2015 for professional and management liability, lower than expected claim frequency in accident years 2012 through 2015 for professional liability and lower than expected severity in accident years 2014 through 2015 for professional liability. Favorable development in surety coverages was primarily due to lower than expected frequency of large losses in accident years 2015 and prior. Favorable development in commercial auto was primarily due to lower than expected severity in accident years 2013 through 2016, as well as a large favorable recovery on a claim in accident year 2012. Favorable development in general liability was due to lower than expected severity in life sciences. Favorable development in workers’ compensation was primarily related to decreases in frequency and severity in recent accident years, partially attributable to California reforms impacting medical costs. This was partially offset by unfavorable development related to an adverse arbitration ruling on reinsurance recoverables from older accident years as well as the recognition of loss estimates associated with earned premium from a prior exposure year. Unfavorable development for other coverages was primarily due to higher than expected severity in accident year 2015 arising from the management liability business, partially offset by favorable development in accident years 2014 and prior. Additional unfavorable development was related to adverse large claims experience in the CNA Hardy political risks portfolio, relating largely to accident year 2016. This was partially offset by favorable development related to better than expected frequency in accident years 2014 through 2016 in property and in energy and marine. 2016 Favorable development in other professional liability and management liability was primarily due to favorable settlements on closed claims and lower than expected frequency of claims in accident years 2010 through 2014 related to professional services and financial institutions. This was partially offset by unfavorable development related to a specific financial institutions claim in accident year 2014, higher management liability severities in accident year 2015 and deterioration on credit crises-related claims in accident year 2009. Favorable development in surety coverages was primarily due to lower than expected frequency of large losses in accident years 2014 and prior. Favorable development in commercial auto was primarily due to favorable settlements on claims in accident years 2010 through 2014 and lower than expected severities in accident years 2012 through 2015. Favorable development in general liability was primarily due to better than expected claim settlements in accident years 2012 through 2014, better than expected severity on umbrella claims in accident years 2010 through 2013 and better than expected severity in medical products liability in accident years 2010 through 2015. This was partially offset by unfavorable development related to an increase in reported claims prior to the closing of the three year window set forth by the Minnesota Child Victims Act in accident years 2006 and prior. Unfavorable development in workers’ compensation was primarily due to higher than expected severity for Defense Base Act contractors that largely resulted from a reduction of expected future recoveries from the U.S. Department of Labor under the War Hazard Act. Further unfavorable development was due to the impact of recent Florida court rulings for accident years 2008 through 2015. These were partially offset by favorable development related to lower than expected frequencies related to the ongoing Middle Market and Small Business results for accident years 2009 through 2014. Favorable development in other coverages was due to better than expected claim frequency and claim severity in accident years 2010 through 2015, better than expected loss frequency in accident years 2013 through 2015, better than expected severity on the December 2015 United Kingdom floods, better than expected attritional losses and large loss experience on accident years 2013 through 2015 for Hardy business and favorable settlements on claims in accident years 2013 and prior related to CNA’s Canadian package business. Additional favorable development was due to a commutation of exposures in marine run-off Property & Casualty Operations – Line of Business Composition The table below presents the net liability for unpaid claim and claim adjustment expenses, by line of business for Property & Casualty Operations: December 31 2018 (In millions) Medical professional liability $ 1,457 Other professional liability and management liability 2,849 Surety 379 Commercial auto 412 General liability 3,195 Workers’ compensation 3,968 Other 2,093 Total net liability for unpaid claim and claim adjustment expenses $ 14,353 Medical Professional Liability December 31, 2018 Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses Cumulative Number of December 31 2009 (a) 2010 (a) 2011 (a) 2012 (a) 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 IBNR Claims (In millions, except reported claims data) Accident Year 2009 $ 389 $ 390 $ 392 $ 392 $ 366 $ 346 $ 336 $ 309 $ 302 $ 310 $ - 14,716 2010 402 412 423 426 415 395 365 360 356 - 14,615 2011 429 437 443 468 439 434 437 437 8 16,505 2012 464 469 508 498 493 484 493 10 17,691 2013 462 479 500 513 525 535 28 19,442 2014 450 489 537 530 535 30 19,602 2015 433 499 510 494 78 17,835 2016 427 487 485 120 15,427 2017 412 449 217 13,777 2018 404 333 11,205 Total $ 4,498 $ 824 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2009 $ 9 $ 63 $ 143 $ 211 $ 247 $ 269 $ 280 $ 288 $ 291 $ 300 2010 10 86 173 257 306 326 337 346 350 2011 17 109 208 295 347 375 398 409 2012 14 117 221 323 388 427 457 2013 17 119 255 355 414 462 2014 23 136 258 359 417 2015 22 101 230 313 2016 18 121 246 2017 19 107 2018 21 Total $ 3,082 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 1,416 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 18 Liability for unallocated claim adjustment expenses for accident years presented 23 Total net liability for unpaid claim and claim adjustment expenses $ 1,457 Net Strengthening or (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2009 $ 1 $ 2 $ - $ (26 ) $ (20 ) $ (10 ) $ (27 ) $ (7 ) $ 8 $ (79 ) 2010 10 11 3 (11 ) (20 ) (30 ) (5 ) (4 ) (46 ) 2011 8 6 25 (29 ) (5 ) 3 - 8 2012 5 39 (10 ) (5 ) (9 ) 9 29 2013 17 21 13 12 10 73 2014 39 48 (7 ) 5 85 2015 66 11 (16 ) 61 2016 60 (2 ) 58 2017 37 37 Total net development for the accident years presented above 60 58 47 Total net development for accident years prior to 2009 (51 ) (21 ) 1 Total unallocated claim adjustment expense development - (7 ) (1 ) Total $ 9 $ 30 $ 47 (a) Data presented for these calendar years is required supplemental information, which is unaudited. Other Professional Liability and Management Liability December 31, 2018 Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses Cumulative Number of December 31 2009 (a) 2010 (a) 2011 (a) 2012 (a) 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 IBNR Claims (In millions, except reported claims data) Accident Year 2009 $ 831 $ 875 $ 908 $ 903 $ 893 $ 903 $ 897 $ 906 $ 904 $ 892 $ 18 17,374 2010 828 828 848 848 847 837 824 827 821 19 17,888 2011 880 908 934 949 944 911 899 888 39 18,728 2012 923 909 887 878 840 846 833 41 18,491 2013 884 894 926 885 866 863 65 17,918 2014 878 898 885 831 835 88 17,515 2015 888 892 877 832 194 17,333 2016 901 900 900 279 17,787 2017 847 845 479 17,780 2018 850 726 16,564 Total $ 8,559 $ 1,948 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2009 $ 37 $ 195 $ 361 $ 553 $ 641 $ 722 $ 772 $ 801 $ 825 $ 844 2010 31 204 405 541 630 670 721 752 784 2011 71 314 503 605 683 726 781 796 2012 56 248 400 573 651 711 755 2013 54 249 447 618 702 754 2014 51 223 392 515 647 2015 60 234 404 542 2016 64 248 466 2017 57 222 2018 54 Total $ 5,864 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 2,695 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 90 Liability for unallocated claim adjustment expenses for accident years presented 64 Total net liability for unpaid claim and claim adjustment expenses $ 2,849 Net Strengthening or (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2009 $ 44 $ 33 $ (5 ) $ (10 ) $ 10 $ (6 ) $ 9 $ (2 ) $ (12 ) $ 61 2010 - 20 - (1 ) (10 ) (13 ) 3 (6 ) (7 ) 2011 28 26 15 (5 ) (33 ) (12 ) (11 ) 8 2012 (14 ) (22 ) (9 ) (38 ) 6 (13 ) (90 ) 2013 10 32 (41 ) (19 ) (3 ) (21 ) 2014 20 (13 ) (54 ) 4 (43 ) 2015 4 (15 ) (45 ) (56 ) 2016 (1 ) - (1 ) 2017 (2 ) (2 ) Total net development for the accident years presented above (125 ) (94 ) (88 ) Total net development for accident years prior to 2009 (15 ) (25 ) (32 ) Total unallocated claim adjustment expense development - (7 ) (7 ) Total $ (140 ) $ (126 ) $ (127 ) (a) Data presented for these calendar years is required supplemental information, which is unaudited. Surety December 31, 2018 Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses Cumulative Number of December 31 2009 (a) 2010 (a) 2011 (a) 2012 (a) 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 IBNR Claims (In millions, except reported claims data) Accident Year 2009 $ 114 $ 114 $ 103 $ 85 $ 68 $ 59 $ 52 $ 53 $ 53 $ 52 $ 1 6,688 2010 112 112 111 84 76 66 63 59 61 1 5,971 2011 120 121 116 87 75 70 66 62 1 5,808 2012 120 122 98 70 52 45 39 2 5,559 2013 120 121 115 106 91 87 6 5,039 2014 123 124 94 69 60 19 5,036 2015 131 131 104 79 36 4,887 2016 124 124 109 60 5,185 2017 120 115 78 4,936 2018 114 101 3,105 Total $ 778 $ 305 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2009 $ 13 $ 24 $ 34 $ 41 $ 43 $ 45 $ 46 $ 47 $ 47 $ 47 2010 13 34 50 55 57 58 55 52 52 2011 19 42 55 58 60 60 56 57 2012 5 32 34 35 35 36 37 2013 16 40 69 78 78 78 2014 7 30 38 36 38 2015 7 26 38 40 2016 5 37 45 2017 23 37 2018 5 Total $ 436 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 342 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 7 Liability for unallocated claim adjustment expenses for accident years presented 30 Total net liability for unpaid claim and claim adjustment expenses $ 379 Net Strengthening or (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2009 $ - $ (11 ) $ (18 ) $ (17 ) $ (9 ) $ (7 ) $ 1 $ - $ (1 ) $ (62 ) 2010 - (1 ) (27 ) (8 ) (10 ) (3 ) (4 ) 2 (51 ) 2011 1 (5 ) (29 ) (12 ) (5 ) (4 ) (4 ) (58 ) 2012 2 (24 ) (28 ) (18 ) (7 ) (6 ) (81 ) 2013 1 (6 ) (9 ) (15 ) (4 ) (33 ) 2014 1 (30 ) (25 ) (9 ) (63 ) 2015 - (27 ) (25 ) (52 ) 2016 - (15 ) (15 ) 2017 (5 ) (5 ) Total net development for the accident years presented above (64 ) (82 ) (67 ) Total net development for accident years prior to 2009 1 1 (3 ) Total unallocated claim adjustment expense development - (3 ) - Total $ (63 ) $ (84 ) $ (70 ) (a) Data presented for these calendar years is required supplemental information, which is unaudited. Commercial Auto December 31, 2018 Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses Cumulative Number of December 31 2009 (a) 2010 (a) 2011 (a) 2012 (a) 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 IBNR Claims (In millions, except reported claims data) Accident Year 2009 $ 291 $ 276 $ 280 $ 282 $ 285 $ 281 $ 278 $ 276 $ 276 $ 277 $ - 48,499 2010 267 283 287 291 298 293 289 288 288 1 48,030 2011 268 281 288 302 300 294 294 294 4 47,905 2012 275 289 299 303 307 299 299 6 46,288 2013 246 265 265 249 245 245 7 39,429 2014 234 223 212 205 205 9 33,609 2015 201 199 190 190 22 30,388 2016 198 186 186 27 30,342 2017 199 198 45 30,580 2018 229 118 28,602 Total $ 2,411 $ 239 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2009 $ 73 $ 130 $ 191 $ 233 $ 261 $ 272 $ 274 $ 274 $ 275 $ 277 2010 74 141 203 246 271 281 286 287 287 2011 79 145 199 248 274 284 287 289 2012 78 160 220 259 282 285 290 2013 74 135 168 200 225 234 2014 64 102 137 166 187 2015 52 96 130 153 2016 52 93 126 2017 58 107 2018 66 Total $ 2,016 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 395 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 6 Liability for unallocated claim adjustment expenses for accident years presented 11 Total net liability for unpaid claim and claim adjustment expenses $ 412 Net Strengthening or (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2009 $ (15 ) $ 4 $ 2 $ 3 $ (4 ) $ (3 ) $ (2 ) $ - $ 1 $ (14 ) 2010 16 4 4 7 (5 ) (4 ) (1 ) - 21 2011 13 7 14 (2 ) (6 ) - - 26 2012 14 10 4 4 (8 ) - 24 2013 19 - (16 ) (4 ) - (1 ) 2014 (11 ) (11 ) (7 ) - (29 ) 2015 (2 ) (9 ) - (11 ) 2016 (12 ) - (12 ) 2017 (1 ) (1 ) Total net development for the accident years presented above (37 ) (41 ) - Total net development for accident years prior to 2009 (10 ) 4 - Total unallocated claim adjustment expense development - 2 1 Total $ (47 ) $ (35 ) $ 1 (a) Data presented for these calendar years is required supplemental information, which is unaudited. General Liability December 31, 2018 Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses Cumulative Number of December 31 2009 (a) 2010 (a) 2011 (a) 2012 (a) 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 IBNR Claims (In millions, except reported claims data) Accident Year 2009 $ 662 $ 716 $ 733 $ 755 $ 752 $ 756 $ 755 $ 754 $ 755 $ 755 $ 16 44,934 2010 646 664 658 709 750 726 697 691 691 24 44,144 2011 591 589 631 677 676 681 670 669 26 39,283 2012 587 611 639 636 619 635 635 46 35,083 2013 650 655 650 655 613 623 51 33,420 2014 653 658 654 631 635 71 27,736 2015 581 576 574 589 122 23,471 2016 623 659 667 265 23,078 2017 632 632 412 19,716 2018 653 553 13,336 Total $ 6,549 $ 1,586 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2009 $ 33 $ 124 $ 305 $ 468 $ 576 $ 625 $ 663 $ 701 $ 721 $ 727 2010 27 145 280 429 561 611 642 652 656 2011 28 148 273 411 517 568 602 622 2012 28 132 247 374 454 510 559 2013 31 128 240 352 450 510 2014 31 119 247 376 481 2015 19 110 230 357 2016 32 163 279 2017 23 118 2018 33 Total $ 4,342 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 2,207 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2009 927 Liability for unallocated claim adjustment expenses for accident years presented 61 Total net liability for unpaid claim and claim adjustment expenses $ 3,195 Net Strengthening or (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2009 $ 54 $ 17 $ 22 $ (3 ) $ 4 $ (1 ) $ (1 ) $ 1 $ - $ 93 2010 18 (6 ) 51 41 (24 ) (29 ) (6 ) - 45 2011 (2 ) 42 46 (1 ) 5 (11 ) (1 ) 78 2012 24 28 (3 ) (17 ) 16 - 48 2013 5 (5 ) 5 (42 ) 10 (27 ) 2014 5 (4 ) (23 ) 4 (18 ) 2015 (5 ) (2 ) 15 8 2016 36 8 44 2017 - - Total net development for the accident years presented above (46 ) (31 ) 36 Total net development for accident years prior to 2009 (19 ) (1 ) - Total unallocated claim adjustment expense development - 8 (4 ) Total $ (65 ) $ (24 ) $ 32 (a) Data presented for these calendar years is required supplemental information, which is una |