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Insurance Claim Reserves (Tables)

12 Months Ended

Dec. 31, 2019

Claims and claim adjustment expense reserves [Table Text Block]

Claims and claim adjustment expense reserves were as follows:



(at December 31, in millions)	2019		2018
Property-casualty	$	51,836	$	50,653
Accident and health	13		15
Total	$	51,849	$	50,668

Reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses [Table Text Block]

The following table presents a reconciliation of beginning and ending property casualty reserve balances for claims and claim adjustment expenses:



(at and for the year ended December 31, in millions)	2019		2018			2017
Claims and claim adjustment expense reserves at beginning of year	$	50,653	$	49,633		$	47,929
Less reinsurance recoverables on unpaid losses	8,182		8,123			7,981
Net reserves at beginning of year	42,471		41,510			39,948
Estimated claims and claim adjustment expenses for claims arising in the current year	18,854		18,614			17,846
Estimated increase (decrease) in claims and claim adjustment expenses for claims arising in prior years	164		(406		)	(458		)
Total increases	19,018		18,208			17,388
Claims and claim adjustment expense payments for claims arising in:
Current year	7,734		7,697			7,335
Prior years	10,060		9,363			8,708
Total payments	17,794		17,060			16,043
Unrealized foreign exchange loss (gain)	106		(187		)	217
Net reserves at end of year	43,801		42,471			41,510
Plus reinsurance recoverables on unpaid losses	8,035		8,182			8,123
Claims and claim adjustment expense reserves at end of year	$	51,836	$	50,653		$	49,633

Summary of claims and claim adjustment expense reserves, including certain components, for the Company's major product lines by reporting segment [Table Text Block]

The following is a summary of claims and claim adjustment expense reserves, including certain components, for the Company’s major product lines by reporting segment at December 31, 2019.



(at December 31, 2019, in millions)	Net Undiscounted Claims and Claim Adjustment Expense Reserves		Discount (Net of Reinsurance)			Subtotal: Net Claims and Claim Adjustment Expense Reserves		Reinsurance Recoverables on Unpaid Losses (4)			Claims and Claim Adjustment Expense Reserves
Business Insurance
General liability	$	7,749	$	(172	)	$	7,577	$	842		$	8,419
Commercial property	887		—			887		389			1,276
Commercial multi-peril	3,784		—			3,784		175			3,959
Commercial automobile	3,237		—			3,237		259			3,496
Workers’ compensation ⁽¹⁾	16,184		(911		)	15,273		745			16,018
Bond & Specialty Insurance
General liability	1,824		—			1,824		108			1,932
Fidelity and surety	399		—			399		4			403
Personal Insurance
Automobile	2,862		—			2,862		486			3,348
Homeowners (excluding Other)	1,168		—			1,168		57			1,225
International - Canada	739		—			739		19			758
Subtotal — claims and allocated claim adjustment expenses for the products presented in the development tables below	38,833		(1,083		)	37,750		3,084			40,834
Other insurance contracts ⁽²⁾	3,895		(5		)	3,890		1,968			5,858
Unallocated loss adjustment expense reserves	2,104		—			2,104		39			2,143
Structured settlements ⁽³⁾	—		—			—		2,965			2,965
Other	57		—			57		(21		)	36
Total property-casualty	44,889		(1,088		)	43,801		8,035			51,836
Accident and health	—		—			—		13			13
Total	$	44,889	$	(1,088	)	$	43,801	$	8,048		$	51,849

___________________________________________


(1)	Net discount amount includes discount of $67 million on reinsurance recoverables for long-term disability and annuity claim payments.


(2)	Primarily includes residual market, international (other than operations in Canada within the Personal Insurance segment) and runoff assumed reinsurance business.


(3)	Includes structured settlements in cases where the Company did not receive a release from the claimant.

(4)

Total reinsurance recoverables (on paid and unpaid losses) at December 31, 2019 were $8.24 billion.

Allocated claim adjustment expense, by accident year, on a historical basis for incurred and paid claims on an undiscounted, net of reinsurance basis [Table Text Block]

Business Insurance

General Liability



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves Dec 31, 2019		Cumulative Number of Reported Claims
2010	$	1,028	$	1,031	$	1,021	$	959	$	927	$	912	$	918	$	908	$	911	$	900	$	62	27,993
2011			1,004		1,074		1,065		998		972		935		913		908		922		69		27,557
2012					989		985		935		913		892		905		917		920		78		24,920
2013							965		975		958		940		927		933		975		104		22,625
2014									976		989		983		948		956		1,013		159		22,319
2015											998		956		923		967		1,057		165		21,360
2016													1,075		1,058		1,087		1,187		359		19,997
2017															1,133		1,143		1,196		530		18,014
2018																	1,253		1,312		841		16,694
2019																			1,447		1,231		12,167
																	Total		$	10,929



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	35	$	139	$	324	$	487	$	629	$	702	$	756	$	781	$	800	$	814
2011			47		187		355		539		660		725		762		799		819
2012					32		150		295		489		589		699		754		811
2013							35		175		363		498		639		745		816		Liability for Claims
2014									37		163		321		515		640		750		And Allocated Claim
2015											36		137		336		558		740		Adjustment Expenses,
2016													35		191		421		649		Net of Reinsurance
2017															40		180		378
2018																	42		202		2010 -		Before
2019																			51		2019		2010
																	Total		$	6,030	$	4,899	$	2,850
																			Total net liability				$	7,749



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	3.6	%	12.6	%	18.0	%	18.9	%	14.0	%	9.8	%	5.8	%	4.3	%	2.1	%	1.6	%

Commercial Property



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year											IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2015	$	786	$	750	$	741	$	731	$	737	$	8	20,162
2016			896		863		820		809		11		22,313
2017					1,209		1,177		1,151		11		25,066
2018							1,093		1,079		10		24,785
2019									1,069		84		22,186
							Total		$	4,845



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
	Unaudited
											Liability for Claims
Accident Year											And Allocated Claim
2015	$	376	$	615	$	681	$	699	$	717	Adjustment Expenses,
2016			441		685		745		767		Net of Reinsurance
2017					618		1,003		1,073
2018							561		928		2015 -		Before
2019									610		2019		2015
							Total		$	4,095	$	750	$	137
									Total net liability				$	887



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	53.6	%	32.6	%	7.5	%	2.5	%	2.5	%

Commercial Multi-Peril



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	1,711	$	1,826	$	1,832	$	1,861	$	1,895	$	1,892	$	1,898	$	1,885	$	1,881	$	1,868	$	19	112,074
2011			2,235		2,244		2,269		2,286		2,296		2,287		2,283		2,279		2,272		25		125,867
2012					1,885		1,883		1,903		1,888		1,888		1,867		1,859		1,854		34		104,921
2013							1,615		1,623		1,620		1,609		1,591		1,600		1,599		38		83,818
2014									1,663		1,627		1,625		1,617		1,626		1,627		50		78,292
2015											1,568		1,625		1,593		1,597		1,606		92		71,635
2016													1,662		1,623		1,598		1,590		122		68,888
2017															1,872		1,928		1,956		266		71,220
2018																	1,976		2,114		416		68,403
2019																			2,017		715		70,798
																	Total		$	18,503



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	709	$	1,180	$	1,395	$	1,579	$	1,698	$	1,763	$	1,798	$	1,819	$	1,834	$	1,840
2011			1,060		1,573		1,803		1,979		2,088		2,156		2,193		2,222		2,234
2012					795		1,246		1,424		1,590		1,699		1,752		1,780		1,804
2013							644		987		1,167		1,304		1,410		1,475		1,516		Liability for Claims
2014									628		956		1,154		1,328		1,448		1,512		And Allocated Claim
2015											595		970		1,144		1,310		1,409		Adjustment Expenses,
2016													585		950		1,133		1,278		Net of Reinsurance
2017															716		1,199		1,388
2018																	792		1,302		2010 -		Before
2019																			707		2019		2010
																	Total		$	14,990	$	3,513	$	271
																			Total net liability				$	3,784



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	38.9	%	23.2	%	10.8	%	9.3	%	6.2	%	3.5	%	1.9	%	1.3	%	0.7	%	0.3	%

Commercial Automobile



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
	Unaudited
Accident Year											IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2015	$	1,188	$	1,202	$	1,234	$	1,283	$	1,298	$	48	173,545
2016			1,278		1,303		1,371		1,409		94		183,114
2017					1,386		1,501		1,524		219		191,166
2018							1,645		1,742		469		201,578
2019									1,835		838		167,863
							Total		$	7,808



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
	Unaudited
											Liability for Claims
Accident Year											And Allocated Claim
2015	$	405	$	650	$	885	$	1,058	$	1,181	Adjustment Expenses,
2016			412		688		931		1,158		Net of Reinsurance
2017					456		746		1,027
2018							515		848		2015 -		Before
2019									539		2019		2015
							Total		$	4,753	$	3,055	$	182
									Total net liability				$	3,237



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	29.8	%	19.2	%	17.9	%	14.7	%	9.5	%

Workers’ Compensation



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	1,886	$	2,042	$	2,035	$	2,056	$	2,049	$	2,052	$	2,055	$	2,021	$	2,003	$	1,984	$	248	117,466
2011			2,284		2,303		2,347		2,350		2,379		2,385		2,363		2,348		2,320		319		136,801
2012					2,447		2,456		2,457		2,456		2,445		2,453		2,416		2,387		367		138,034
2013							2,553		2,545		2,540		2,506		2,463		2,423		2,354		408		134,091
2014									2,554		2,553		2,547		2,476		2,430		2,393		486		129,293
2015											2,644		2,585		2,505		2,441		2,372		636		123,163
2016													2,768		2,690		2,569		2,473		702		122,944
2017															2,779		2,681		2,584		918		120,900
2018																	2,744		2,687		1,180		121,460
2019																			2,680		1,619		107,298
																	Total		$	24,234



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	341	$	750	$	978	$	1,133	$	1,246	$	1,321	$	1,385	$	1,430	$	1,465	$	1,490
2011			420		911		1,185		1,365		1,487		1,583		1,652		1,696		1,732
2012					443		940		1,217		1,394		1,536		1,629		1,689		1,735
2013							458		954		1,237		1,413		1,525		1,604		1,659		Liability for Claims
2014									455		944		1,224		1,399		1,505		1,581		And Allocated Claim
2015											430		893		1,154		1,310		1,411		Adjustment Expenses,
2016													421		873		1,118		1,272		Net of Reinsurance
2017															433		890		1,154
2018																	440		919		2010 -		Before
2019																			466		2019		2010
																	Total		$	13,419	$	10,815	$	5,369
																			Total net liability				$	16,184



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	17.8	%	19.7	%	11.2	%	7.2	%	5.1	%	3.7	%	2.8	%	2.0	%	1.7	%	1.3	%

Bond & Specialty Insurance

General Liability



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	571	$	612	$	679	$	679	$	661	$	668	$	653	$	653	$	657	$	660	$	16	5,677
2011			565		596		639		632		601		545		520		508		506		2		5,213
2012					538		591		614		605		601		599		605		593		60		4,865
2013							510		565		606		630		654		607		586		42		4,456
2014									549		571		563		518		473		452		32		4,356
2015											528		524		486		437		395		38		4,195
2016													512		511		504		520		91		4,326
2017															534		517		526		174		4,455
2018																	530		548		243		4,393
2019																			588		432		3,400
																	Total		$	5,374



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	33	$	152	$	291	$	396	$	482	$	565	$	597	$	623	$	631	$	635
2011			33		143		249		324		414		447		476		490		496
2012					38		160		255		342		383		419		436		453
2013							34		154		252		352		400		434		451		Liability for Claims
2014									38		150		239		312		367		407		And Allocated Claim
2015											38		141		234		310		338		Adjustment Expenses,
2016													30		141		233		313		Net of Reinsurance
2017															38		155		262
2018																	49		182		2010 -		Before
2019																			51		2019		2010
																	Total		$	3,588	$	1,786	$	38
																			Total net liability				$	1,824



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	7.2	%	22.1	%	19.5	%	16.2	%	10.9	%	7.9	%	4.1	%	3.1	%	1.2	%	0.6	%

Fidelity and Surety



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	217	$	191	$	179	$	145	$	137	$	32	834
2016			226		239		205		208		9		886
2017					244		271		240		22		905
2018							220		235		22		849
2019									203		116		592
							Total		$	1,023



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	32	$	75	$	87	$	86	$	88	Adjustment Expenses,
2016			54		121		142		149		Net of Reinsurance
2017					70		166		194
2018							64		171		2015 -		Before
2019									49		2019		2015
							Total		$	651	$	372	$	27
									Total net liability				$	399



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	26.0	%	37.3	%	10.1	%	1.3	%	1.3	%

Personal Insurance

Automobile



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	2,186	$	2,244	$	2,236	$	2,222	$	2,219	$	11	757,972
2016			2,779		2,791		2,772		2,752		44		922,014
2017					3,323		3,256		3,221		139		1,061,907
2018							3,281		3,269		347		1,048,084
2019									3,362		858		940,933
							Total		$	14,823



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	1,319	$	1,768	$	1,985	$	2,109	$	2,174	Adjustment Expenses,
2016			1,610		2,203		2,466		2,616		Net of Reinsurance
2017					1,912		2,575		2,887
2018							1,889		2,582		2015 -		Before
2019									1,933		2019		2015
							Total		$	12,192	$	2,631	$	231
									Total net liability				$	2,862



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	58.5	%	20.9	%	9.7	%	5.5	%	2.9	%

Homeowners (excluding Other)



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	1,438	$	1,454	$	1,461	$	1,452	$	1,443	$	1	145,136
2016			1,556		1,547		1,525		1,511		8		143,949
2017					2,312		2,340		2,343		49		169,085
2018							2,610		2,574		112		185,384
2019									2,297		447		158,328
							Total		$	10,168



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	994	$	1,333	$	1,395	$	1,421	$	1,429	Adjustment Expenses,
2016			1,049		1,392		1,455		1,479		Net of Reinsurance
2017					1,471		2,059		2,197
2018							1,657		2,298		2015 -		Before
2019									1,613		2019		2015
							Total		$	9,016	$	1,152	$	16
									Total net liability				$	1,168



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	67.1	%	24.1	%	4.8	%	1.7	%	0.6	%

International - Canada



	(dollars in millions)
	For the Years Ended December 31,																				IBNR Reserves December 31, 2019			Cumulative
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019					Number of
Accident	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance																							Reported
Year	Unaudited																							Claims
2010	$	487	$	488	$	499	$	514	$	501	$	493	$	489	$	482	$	481	$	477	$	1		54,938
2011			459		438		446		441		434		427		422		417		408		(5		)	55,773
2012					435		413		414		398		397		380		374		362		(2		)	51,208
2013							485		478		469		457		444		443		433		—			54,251
2014									429		444		445		433		426		423		(9		)	52,268
2015											361		360		360		356		358		10			45,203
2016													361		409		409		419		19			45,759
2017															346		381		403		34			46,769
2018																	440		462		64			50,302
2019																			445		110			44,796
																	Total		$	4,190



Accident	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Year	Unaudited
2010	$	191	$	292	$	329	$	369	$	400	$	430	$	447	$	459	$	465		$	468
2011			176		249		280		314		349		371		389		397			401
2012					165		231		262		288		316		333		342			347
2013							194		272		304		336		369		387			405		Liability for Claims
2014									189		265		302		331		362			384		And Allocated Claim
2015											162		226		253		282			307		Adjustment Expenses,
2016													211		283		310			343		Net of Reinsurance
2017															182		257			296
2018																	219			305		2010 -		Before
2019																				216		2019		2010
																	Total			$	3,472	$	718	$	21
																			Total net liability					$	739



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	45.5	%	18.4	%	8.0	%	7.8	%	7.4	%	5.2	%	3.6	%	1.9	%	1.1	%	0.7	%

Historical average annual percentage payout of incurred claims by age of accident year [Table Text Block]

Business Insurance

General Liability



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves Dec 31, 2019		Cumulative Number of Reported Claims
2010	$	1,028	$	1,031	$	1,021	$	959	$	927	$	912	$	918	$	908	$	911	$	900	$	62	27,993
2011			1,004		1,074		1,065		998		972		935		913		908		922		69		27,557
2012					989		985		935		913		892		905		917		920		78		24,920
2013							965		975		958		940		927		933		975		104		22,625
2014									976		989		983		948		956		1,013		159		22,319
2015											998		956		923		967		1,057		165		21,360
2016													1,075		1,058		1,087		1,187		359		19,997
2017															1,133		1,143		1,196		530		18,014
2018																	1,253		1,312		841		16,694
2019																			1,447		1,231		12,167
																	Total		$	10,929



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	35	$	139	$	324	$	487	$	629	$	702	$	756	$	781	$	800	$	814
2011			47		187		355		539		660		725		762		799		819
2012					32		150		295		489		589		699		754		811
2013							35		175		363		498		639		745		816		Liability for Claims
2014									37		163		321		515		640		750		And Allocated Claim
2015											36		137		336		558		740		Adjustment Expenses,
2016													35		191		421		649		Net of Reinsurance
2017															40		180		378
2018																	42		202		2010 -		Before
2019																			51		2019		2010
																	Total		$	6,030	$	4,899	$	2,850
																			Total net liability				$	7,749



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	3.6	%	12.6	%	18.0	%	18.9	%	14.0	%	9.8	%	5.8	%	4.3	%	2.1	%	1.6	%

Commercial Property



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year											IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2015	$	786	$	750	$	741	$	731	$	737	$	8	20,162
2016			896		863		820		809		11		22,313
2017					1,209		1,177		1,151		11		25,066
2018							1,093		1,079		10		24,785
2019									1,069		84		22,186
							Total		$	4,845



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
	Unaudited
											Liability for Claims
Accident Year											And Allocated Claim
2015	$	376	$	615	$	681	$	699	$	717	Adjustment Expenses,
2016			441		685		745		767		Net of Reinsurance
2017					618		1,003		1,073
2018							561		928		2015 -		Before
2019									610		2019		2015
							Total		$	4,095	$	750	$	137
									Total net liability				$	887



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	53.6	%	32.6	%	7.5	%	2.5	%	2.5	%

Commercial Multi-Peril



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	1,711	$	1,826	$	1,832	$	1,861	$	1,895	$	1,892	$	1,898	$	1,885	$	1,881	$	1,868	$	19	112,074
2011			2,235		2,244		2,269		2,286		2,296		2,287		2,283		2,279		2,272		25		125,867
2012					1,885		1,883		1,903		1,888		1,888		1,867		1,859		1,854		34		104,921
2013							1,615		1,623		1,620		1,609		1,591		1,600		1,599		38		83,818
2014									1,663		1,627		1,625		1,617		1,626		1,627		50		78,292
2015											1,568		1,625		1,593		1,597		1,606		92		71,635
2016													1,662		1,623		1,598		1,590		122		68,888
2017															1,872		1,928		1,956		266		71,220
2018																	1,976		2,114		416		68,403
2019																			2,017		715		70,798
																	Total		$	18,503



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	709	$	1,180	$	1,395	$	1,579	$	1,698	$	1,763	$	1,798	$	1,819	$	1,834	$	1,840
2011			1,060		1,573		1,803		1,979		2,088		2,156		2,193		2,222		2,234
2012					795		1,246		1,424		1,590		1,699		1,752		1,780		1,804
2013							644		987		1,167		1,304		1,410		1,475		1,516		Liability for Claims
2014									628		956		1,154		1,328		1,448		1,512		And Allocated Claim
2015											595		970		1,144		1,310		1,409		Adjustment Expenses,
2016													585		950		1,133		1,278		Net of Reinsurance
2017															716		1,199		1,388
2018																	792		1,302		2010 -		Before
2019																			707		2019		2010
																	Total		$	14,990	$	3,513	$	271
																			Total net liability				$	3,784



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	38.9	%	23.2	%	10.8	%	9.3	%	6.2	%	3.5	%	1.9	%	1.3	%	0.7	%	0.3	%

Commercial Automobile



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
	Unaudited
Accident Year											IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2015	$	1,188	$	1,202	$	1,234	$	1,283	$	1,298	$	48	173,545
2016			1,278		1,303		1,371		1,409		94		183,114
2017					1,386		1,501		1,524		219		191,166
2018							1,645		1,742		469		201,578
2019									1,835		838		167,863
							Total		$	7,808



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
	Unaudited
											Liability for Claims
Accident Year											And Allocated Claim
2015	$	405	$	650	$	885	$	1,058	$	1,181	Adjustment Expenses,
2016			412		688		931		1,158		Net of Reinsurance
2017					456		746		1,027
2018							515		848		2015 -		Before
2019									539		2019		2015
							Total		$	4,753	$	3,055	$	182
									Total net liability				$	3,237



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	29.8	%	19.2	%	17.9	%	14.7	%	9.5	%

Workers’ Compensation



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	1,886	$	2,042	$	2,035	$	2,056	$	2,049	$	2,052	$	2,055	$	2,021	$	2,003	$	1,984	$	248	117,466
2011			2,284		2,303		2,347		2,350		2,379		2,385		2,363		2,348		2,320		319		136,801
2012					2,447		2,456		2,457		2,456		2,445		2,453		2,416		2,387		367		138,034
2013							2,553		2,545		2,540		2,506		2,463		2,423		2,354		408		134,091
2014									2,554		2,553		2,547		2,476		2,430		2,393		486		129,293
2015											2,644		2,585		2,505		2,441		2,372		636		123,163
2016													2,768		2,690		2,569		2,473		702		122,944
2017															2,779		2,681		2,584		918		120,900
2018																	2,744		2,687		1,180		121,460
2019																			2,680		1,619		107,298
																	Total		$	24,234



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	341	$	750	$	978	$	1,133	$	1,246	$	1,321	$	1,385	$	1,430	$	1,465	$	1,490
2011			420		911		1,185		1,365		1,487		1,583		1,652		1,696		1,732
2012					443		940		1,217		1,394		1,536		1,629		1,689		1,735
2013							458		954		1,237		1,413		1,525		1,604		1,659		Liability for Claims
2014									455		944		1,224		1,399		1,505		1,581		And Allocated Claim
2015											430		893		1,154		1,310		1,411		Adjustment Expenses,
2016													421		873		1,118		1,272		Net of Reinsurance
2017															433		890		1,154
2018																	440		919		2010 -		Before
2019																			466		2019		2010
																	Total		$	13,419	$	10,815	$	5,369
																			Total net liability				$	16,184



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	17.8	%	19.7	%	11.2	%	7.2	%	5.1	%	3.7	%	2.8	%	2.0	%	1.7	%	1.3	%

Bond & Specialty Insurance

General Liability



	(dollars in millions)
	For the Years Ended December 31,
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
	Unaudited
Accident Year																					IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
2010	$	571	$	612	$	679	$	679	$	661	$	668	$	653	$	653	$	657	$	660	$	16	5,677
2011			565		596		639		632		601		545		520		508		506		2		5,213
2012					538		591		614		605		601		599		605		593		60		4,865
2013							510		565		606		630		654		607		586		42		4,456
2014									549		571		563		518		473		452		32		4,356
2015											528		524		486		437		395		38		4,195
2016													512		511		504		520		91		4,326
2017															534		517		526		174		4,455
2018																	530		548		243		4,393
2019																			588		432		3,400
																	Total		$	5,374



	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited
2010	$	33	$	152	$	291	$	396	$	482	$	565	$	597	$	623	$	631	$	635
2011			33		143		249		324		414		447		476		490		496
2012					38		160		255		342		383		419		436		453
2013							34		154		252		352		400		434		451		Liability for Claims
2014									38		150		239		312		367		407		And Allocated Claim
2015											38		141		234		310		338		Adjustment Expenses,
2016													30		141		233		313		Net of Reinsurance
2017															38		155		262
2018																	49		182		2010 -		Before
2019																			51		2019		2010
																	Total		$	3,588	$	1,786	$	38
																			Total net liability				$	1,824



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	7.2	%	22.1	%	19.5	%	16.2	%	10.9	%	7.9	%	4.1	%	3.1	%	1.2	%	0.6	%

Fidelity and Surety



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	217	$	191	$	179	$	145	$	137	$	32	834
2016			226		239		205		208		9		886
2017					244		271		240		22		905
2018							220		235		22		849
2019									203		116		592
							Total		$	1,023



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	32	$	75	$	87	$	86	$	88	Adjustment Expenses,
2016			54		121		142		149		Net of Reinsurance
2017					70		166		194
2018							64		171		2015 -		Before
2019									49		2019		2015
							Total		$	651	$	372	$	27
									Total net liability				$	399



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	26.0	%	37.3	%	10.1	%	1.3	%	1.3	%

Personal Insurance

Automobile



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	2,186	$	2,244	$	2,236	$	2,222	$	2,219	$	11	757,972
2016			2,779		2,791		2,772		2,752		44		922,014
2017					3,323		3,256		3,221		139		1,061,907
2018							3,281		3,269		347		1,048,084
2019									3,362		858		940,933
							Total		$	14,823



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	1,319	$	1,768	$	1,985	$	2,109	$	2,174	Adjustment Expenses,
2016			1,610		2,203		2,466		2,616		Net of Reinsurance
2017					1,912		2,575		2,887
2018							1,889		2,582		2015 -		Before
2019									1,933		2019		2015
							Total		$	12,192	$	2,631	$	231
									Total net liability				$	2,862



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	58.5	%	20.9	%	9.7	%	5.5	%	2.9	%

Homeowners (excluding Other)



	(dollars in millions)
	For the Years Ended December 31,
	2015		2016		2017		2018		2019		IBNR Reserves December 31, 2019		Cumulative Number of Reported Claims
	Incurred Claims and Allocated Claims Adjustment
	Expenses, Net of Reinsurance
Accident Year	Unaudited
2015	$	1,438	$	1,454	$	1,461	$	1,452	$	1,443	$	1	145,136
2016			1,556		1,547		1,525		1,511		8		143,949
2017					2,312		2,340		2,343		49		169,085
2018							2,610		2,574		112		185,384
2019									2,297		447		158,328
							Total		$	10,168



	Cumulative Paid Claims and Allocated Claim
	Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited										Liability for Claims
											And Allocated Claim
2015	$	994	$	1,333	$	1,395	$	1,421	$	1,429	Adjustment Expenses,
2016			1,049		1,392		1,455		1,479		Net of Reinsurance
2017					1,471		2,059		2,197
2018							1,657		2,298		2015 -		Before
2019									1,613		2019		2015
							Total		$	9,016	$	1,152	$	16
									Total net liability				$	1,168



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5
	67.1	%	24.1	%	4.8	%	1.7	%	0.6	%

International - Canada



	(dollars in millions)
	For the Years Ended December 31,																				IBNR Reserves December 31, 2019			Cumulative
	2010		2011		2012		2013		2014		2015		2016		2017		2018		2019					Number of
Accident	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance																							Reported
Year	Unaudited																							Claims
2010	$	487	$	488	$	499	$	514	$	501	$	493	$	489	$	482	$	481	$	477	$	1		54,938
2011			459		438		446		441		434		427		422		417		408		(5		)	55,773
2012					435		413		414		398		397		380		374		362		(2		)	51,208
2013							485		478		469		457		444		443		433		—			54,251
2014									429		444		445		433		426		423		(9		)	52,268
2015											361		360		360		356		358		10			45,203
2016													361		409		409		419		19			45,759
2017															346		381		403		34			46,769
2018																	440		462		64			50,302
2019																			445		110			44,796
																	Total		$	4,190



Accident	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
Year	Unaudited
2010	$	191	$	292	$	329	$	369	$	400	$	430	$	447	$	459	$	465		$	468
2011			176		249		280		314		349		371		389		397			401
2012					165		231		262		288		316		333		342			347
2013							194		272		304		336		369		387			405		Liability for Claims
2014									189		265		302		331		362			384		And Allocated Claim
2015											162		226		253		282			307		Adjustment Expenses,
2016													211		283		310			343		Net of Reinsurance
2017															182		257			296
2018																	219			305		2010 -		Before
2019																				216		2019		2010
																	Total			$	3,472	$	718	$	21
																			Total net liability					$	739



	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1		2		3		4		5		6		7		8		9		10
	45.5	%	18.4	%	8.0	%	7.8	%	7.4	%	5.2	%	3.6	%	1.9	%	1.1	%	0.7	%