Insurance Claim Reserves (tables)

12 Months Ended

Dec. 31, 2016

Insurance Claim Reserves disclosure

Claims and claim adjustment expense reserves [Table Text Block]

(at December 31, in millions)	2016		2015
Property-casualty	$	47,929	$	48,272
Accident and health		20		23
Total	$	47,949	$	48,295

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

(at and for the year ended December 31, in millions)	2016			2015			2014
Claims and claim adjustment expense reserves at beginning of year	$	48,272		$	49,824		$	50,865
Less reinsurance recoverables on unpaid losses		8,449			8,788			9,280
Net reserves at beginning of year		39,823			41,036			41,585
Estimated claims and claim adjustment expenses for claims arising in the current year		15,675			14,471			14,688
Estimated decrease in claims and claim adjustment expenses for claims arising in prior years		(680	)		(817	)		(885	)
Total increases		14,995			13,654			13,803
Claims and claim adjustment expense payments for claims arising in:
Current year		6,220			5,725			5,895
Prior years		8,576			8,749			8,171
Total payments		14,796			14,474			14,066
Acquisition(1)		—			2			—
Unrealized foreign exchange gain		(74	)		(395	)		(286	)
Net reserves at end of year		39,948			39,823			41,036
Plus reinsurance recoverables on unpaid losses		7,981			8,449			8,788
Claims and claim adjustment expense reserves at end of year	$	47,929		$	48,272		$	49,824

(1)

Amount represents acquired net claims and claim adjustment expense reserves of Travelers Participações em Seguros Brasil S.A. at October 1, 2015.

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

At December 31, 2016 (in millions)	Net Undiscounted Claims and Claim Adjustment Expense Reserves		Discount (Net of Reinsurance)			Subtotal: Net Claims and Allocated Claim Adjustment Expense Reserves		Reinsurance Recoverables on Unpaid Losses		Claims and Claim Adjustment Expense Reserves
Business and International Insurance
General liability	$	7,034	$	(168	)	$	6,866	$	712	$	7,578
Commercial property		866		—			866		194		1,060
Commercial multi-peril		3,414		—			3,414		81		3,495
Commercial automobile		2,270		—			2,270		256		2,526
Workers' compensation(1)		15,439		(832	)		14,607		729		15,336
International—Canada		1,482		—			1,482		157		1,639
Bond & Specialty Insurance
General liability		2,042		—			2,042		82		2,124
Fidelity and surety		450		—			450		17		467
Personal Insurance
Automobile		2,277		—			2,277		465		2,742
Homeowners (excluding Other)		742		—			742		2		744
Subtotal—claims and allocated claim adjustment expenses for the products presented in the development tables below		36,016		(1,000	)		35,016		2,695		37,711
Other insurance contracts(2)		2,955		(3	)		2,952		2,058		5,010
Unallocated loss adjustment expense reserves		1,936		—			1,936		40		1,976
Structured settlements(3)		—		—			—		3,168		3,168
Other		44		—			44		20		64
Total property-casualty		40,951		(1,003	)		39,948		7,981		47,929
Accident and health		—		—			—		20		20
Total	$	40,951	$	(1,003	)	$	39,948	$	8,001	$	47,949

(1)

Net discount amount includes discount of $80 million on reinsurance recoverables for long-term disability and annuity claim payments.

(2)

Primarily includes residual market, non-Canadian international and runoff assumed reinsurance business.

(3)

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

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 and International Insurance

General Liability

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,136	$	1,162	$	1,087	$	1,089	$	968	$	919	$	888	$	883	$	865	$	824	$	78		23,840
2008				1,143		1,209		1,222		1,079		1,041		994		946		931		935		88		25,385
2009						1,060		1,071		1,028		960		869		837		809		796		95		25,457
2010								1,028		1,031		1,021		959		927		912		918		108		27,678
2011										1,004		1,074		1,065		998		972		935		146		27,210
2012												989		985		935		913		892		184		24,384
2013														965		975		958		940		256		21,836
2014																976		989		983		438		20,926
2015																		998		956		592		18,771
2016																				1,075		908		13,810
																Total			$	9,254
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	32	$	134	$	316	$	467	$	549	$	632	$	682	$	697	$	713	$	726
2008				35		154		359		497		615		694		734		759		799
2009						35		167		314		446		543		613		643		667
2010								35		139		324		487		629		702		756		Liability for Claims
2011										47		187		355		539		660		725		And Allocated Claim
2012												32		150		295		489		589		Adjustment Expenses,
2013														35		175		363		498		Net of Reinsurance
2014																37		163		321
2015																		36		137		2007 -		Before
2016																				35		2016		2007
																Total			$	5,253	$	4,001	$	3,033
																				Total net liability			$	7,034

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		3.9	%		13.3	%		19.1	%		17.6	%		12.4	%		8.4	%		5.0	%		2.5	%		3.1	%		1.6	%

Commercial Property

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	1,054	$	988	$	924	$	889	$	895	$	13		28,183
2013				789		755		737		731		10		22,141
2014						936		860		836		15		21,490
2015								786		750		28		19,859
2016										896		131		19,327
Total									$	4,108
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	453	$	770	$	845	$	865	$	872		Adjustment Expenses,
2013				389		610		683		703		Net of Reinsurance
2014						464		710		775
2015								376		615		2012 -		Before
2016										441		2016		2012
Total									$	3,406	$	702	$	164
										Total net liability			$	866

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		51.7	%		31.8	%		8.7	%		2.5	%		0.8	%

Commercial Multi-Peril

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,490	$	1,430	$	1,364	$	1,402	$	1,398	$	1,375	$	1,373	$	1,369	$	1,376	$	1,369	$	51		96,767
2008				1,725		1,674		1,683		1,688		1,674		1,684		1,674		1,688		1,681		47		108,382
2009						1,484		1,506		1,501		1,498		1,511		1,514		1,514		1,509		42		103,198
2010								1,711		1,826		1,832		1,861		1,895		1,892		1,898		51		111,586
2011										2,235		2,244		2,269		2,286		2,296		2,287		66		125,358
2012												1,885		1,883		1,903		1,888		1,888		88		104,419
2013														1,615		1,623		1,620		1,609		122		82,936
2014																1,663		1,627		1,625		193		76,833
2015																		1,568		1,625		354		68,278
2016																				1,662		658		56,471
																Total			$	17,153
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	498	$	824	$	982	$	1,110	$	1,208	$	1,256	$	1,278	$	1,296	$	1,307	$	1,312
2008				712		1,103		1,264		1,396		1,490		1,551		1,581		1,602		1,617
2009						603		958		1,121		1,264		1,360		1,408		1,436		1,449
2010								709		1,180		1,395		1,579		1,698		1,763		1,798		Liability for Claims
2011										1,060		1,573		1,803		1,979		2,088		2,156		And Allocated Claim
2012												795		1,246		1,424		1,590		1,699		Adjustment Expenses,
2013														644		987		1,167		1,304		Net of Reinsurance
2014																628		956		1,154
2015																		595		970		2007 -		Before
2016																				585		2016		2007
Total																			$	14,044	$	3,109	$	305
																				Total net liability			$	3,414

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		39.5	%		22.9	%		10.8	%		8.8	%		6.0	%		3.3	%		1.8	%		1.1	%		0.9	%		0.4	%

Commercial Automobile

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	1,294	$	1,350	$	1,327	$	1,325	$	1,337	$	35		214,780
2013				1,235		1,236		1,240		1,245		67		197,041
2014						1,165		1,166		1,168		131		184,067
2015								1,198		1,215		246		179,963
2016										1,290		516		173,790
Total									$	6,255
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	467	$	753	$	960	$	1,134	$	1,235		Adjustment Expenses,
2013				435		675		884		1,039		Net of Reinsurance
2014						397		618		821
2015								409		658		2012 -		Before
2016										416		2016		2012
Total									$	4,169	$	2,086	$	184
										Total net liability			$	2,270

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		34.0	%		20.0	%		16.6	%		12.7	%		7.6	%

Workers' Compensation

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,554	$	1,519	$	1,484	$	1,448	$	1,390	$	1,373	$	1,358	$	1,340	$	1,328	$	1,341	$	217		103,064
2008				1,714		1,745		1,734		1,683		1,639		1,634		1,621		1,617		1,617		237		107,565
2009						1,799		1,778		1,746		1,753		1,753		1,766		1,775		1,750		272		104,229
2010								1,886		2,042		2,035		2,056		2,049		2,052		2,055		354		116,837
2011										2,284		2,303		2,347		2,350		2,379		2,385		430		135,061
2012												2,447		2,456		2,457		2,456		2,445		519		133,417
2013														2,553		2,545		2,540		2,506		651		128,111
2014																2,554		2,553		2,547		839		123,110
2015																		2,644		2,585		1,142		120,681
2016																				2,768		1,651		108,357
																Total			$	21,999
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	216	$	450	$	589	$	683	$	747	$	802	$	845	$	880	$	910	$	936
2008				274		571		752		875		961		1,036		1,088		1,130		1,162
2009						288		623		828		961		1,065		1,137		1,193		1,235
2010								341		750		978		1,133		1,246		1,321		1,385		Liability for Claims
2011										420		911		1,185		1,365		1,487		1,583		And Allocated Claim
2012												443		940		1,217		1,394		1,536		Adjustment Expenses,
2013														458		954		1,237		1,413		Net of Reinsurance
2014																455		944		1,224
2015																		430		893		2007 -		Before
2016																				421		2016		2007
Total																			$	11,788	$	10,211	$	5,228
																				Total net liability			$	15,439

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		17.0	%		19.2	%		11.2	%		7.4	%		5.4	%		4.1	%		3.2	%		2.5	%		2.1	%		1.9	%

International—Canada

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	632	$	626	$	616	$	608	$	607	$	609	$	611	$	608	$	601	$	597	$	4		66,327
2008				681		685		670		665		658		655		651		646		642		5		71,803
2009						724		718		707		714		714		702		696		690		13		71,671
2010								715		722		721		735		724		715		706		20		71,437
2011										723		696		686		682		678		669		30		72,063
2012												664		642		631		611		616		50		67,320
2013														723		717		701		685		56		71,183
2014																665		678		682		83		67,935
2015																		597		610		112		58,238
2016																				612		102		54,948
																Total			$	6,509
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	228	$	355	$	410	$	450	$	488	$	524	$	547	$	561	$	570	$	578
2008				256		406		460		501		543		579		603		616		622
2009						274		419		479		525		573		608		630		648
2010								258		403		465		522		573		615		641		Liability for Claims
2011										253		380		432		481		538		571		And Allocated Claim
2012												225		336		389		435		482		Adjustment Expenses,
2013														260		388		439		494		Net of Reinsurance
2014																252		382		445
2015																		228		346		2007 -		Before
2016																				295		2016		2007
Total																			$	5,122	$	1,387	$	95
																				Total net liability			$	1,482

	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	%		20.0	%		8.5	%		7.2	%		7.2	%		5.5	%		3.6	%		2.3	%		1.2	%		1.4	%

        The incurred and paid amounts have been translated from the local currency to U.S. dollars using the December 31, 2016 spot rate for all years presented in the table above in order to isolate changes in foreign exchange rates from loss development.

Bond & Specialty Insurance

General Liability

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	584	$	571	$	638	$	582	$	551	$	511	$	479	$	467	$	462	$	454	$	4		11,018
2008				579		769		743		697		716		712		672		643		631		24		6,463
2009						592		624		665		686		680		660		655		641		24		6,287
2010								571		612		679		679		661		668		653		18		5,655
2011										565		596		639		632		601		545		34		5,191
2012												538		591		614		605		601		137		4,824
2013														510		565		606		630		204		4,371
2014																549		571		563		232		4,182
2015																		528		524		272		3,814
2016																				512		405		2,676
																Total			$	5,754
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	35	$	134	$	229	$	303	$	357	$	373	$	393	$	400	$	410	$	415
2008				47		157		281		387		471		529		562		579		590
2009						36		167		310		390		460		497		563		592
2010								33		152		291		396		482		565		597		Liability for Claims
2011										33		143		249		324		414		447		And Allocated Claim
2012												38		160		255		342		383		Adjustment Expenses,
2013														34		154		252		352		Net of Reinsurance
2014																38		150		239
2015																		38		141		2007 -		Before
2016																				30		2016		2007
																Total			$	3,786	$	1,968	$	74
																				Total net liability			$	2,042

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		6.3	%		19.7	%		18.8	%		15.1	%		12.1	%		7.5	%		6.2	%		3.0	%		1.9	%		1.1	%

Fidelity and Surety

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	255	$	262	$	249	$	175	$	140	$	9		1,148
2013				240		246		199		146		6		1,006
2014						223		212		165		32		992
2015								217		191		79		768
2016										226		128		595
Total									$	868
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	42	$	108	$	124	$	110	$	111		Adjustment Expenses,
2013				37		113		128		131		Net of Reinsurance
2014						58		96		111
2015								32		75		2012 -		Before
2016										54		2016		2012
Total									$	482	$	386	$	64
										Total net liability			$	450

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		26.1	%		36.2	%		10.1	%		(3.6)%(1	)		0.8	%

(1)

Includes recovery activity.

Personal Insurance

Automobile

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	2,417	$	2,454	$	2,448	$	2,432	$	2,428	$	15		793,669
2013				2,108		2,095		2,049		2,044		36		694,650
2014						2,014		1,994		1,981		75		669,990
2015								2,186		2,244		224		755,762
2016										2,779		646		839,962
Total									$	11,476
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	1,503	$	1,983	$	2,189	$	2,311	$	2,376		Adjustment Expenses,
2013				1,251		1,628		1,814		1,935		Net of Reinsurance
2014						1,193		1,564		1,763
2015								1,319		1,768		2012 -		Before
2016										1,610		2016		2012
Total									$	9,452	$	2,024	$	253
										Total net liability			$	2,277

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		60.0	%		19.2	%		9.2	%		5.5	%		2.7	%

Homeowners (excluding Other)

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	2,136	$	2,056	$	2,029	$	2,018	$	2,019	$	1		259,006
2013				1,488		1,397		1,365		1,375		4		149,373
2014						1,515		1,450		1,453		9		151,517
2015								1,438		1,454		28		144,367
2016										1,556		307		129,630
		Total							$	7,857
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	1,508	$	1,901	$	1,964	$	1,993	$	2,008		Adjustment Expenses,
2013				994		1,269		1,317		1,344		Net of Reinsurance
2014						1,053		1,338		1,402
2015								994		1,333		2012 -		Before
2016										1,049		2016		2012
Total									$	7,136	$	721	$	21
										Total net liability			$	742

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		71.1	%		20.6	%		3.7	%		1.7	%		0.7	%

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

Business and International Insurance

General Liability

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,136	$	1,162	$	1,087	$	1,089	$	968	$	919	$	888	$	883	$	865	$	824	$	78		23,840
2008				1,143		1,209		1,222		1,079		1,041		994		946		931		935		88		25,385
2009						1,060		1,071		1,028		960		869		837		809		796		95		25,457
2010								1,028		1,031		1,021		959		927		912		918		108		27,678
2011										1,004		1,074		1,065		998		972		935		146		27,210
2012												989		985		935		913		892		184		24,384
2013														965		975		958		940		256		21,836
2014																976		989		983		438		20,926
2015																		998		956		592		18,771
2016																				1,075		908		13,810
																Total			$	9,254
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	32	$	134	$	316	$	467	$	549	$	632	$	682	$	697	$	713	$	726
2008				35		154		359		497		615		694		734		759		799
2009						35		167		314		446		543		613		643		667
2010								35		139		324		487		629		702		756		Liability for Claims
2011										47		187		355		539		660		725		And Allocated Claim
2012												32		150		295		489		589		Adjustment Expenses,
2013														35		175		363		498		Net of Reinsurance
2014																37		163		321
2015																		36		137		2007 -		Before
2016																				35		2016		2007
																Total			$	5,253	$	4,001	$	3,033
																				Total net liability			$	7,034

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		3.9	%		13.3	%		19.1	%		17.6	%		12.4	%		8.4	%		5.0	%		2.5	%		3.1	%		1.6	%

Commercial Property

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	1,054	$	988	$	924	$	889	$	895	$	13		28,183
2013				789		755		737		731		10		22,141
2014						936		860		836		15		21,490
2015								786		750		28		19,859
2016										896		131		19,327
Total									$	4,108
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	453	$	770	$	845	$	865	$	872		Adjustment Expenses,
2013				389		610		683		703		Net of Reinsurance
2014						464		710		775
2015								376		615		2012 -		Before
2016										441		2016		2012
Total									$	3,406	$	702	$	164
										Total net liability			$	866

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		51.7	%		31.8	%		8.7	%		2.5	%		0.8	%

Commercial Multi-Peril

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,490	$	1,430	$	1,364	$	1,402	$	1,398	$	1,375	$	1,373	$	1,369	$	1,376	$	1,369	$	51		96,767
2008				1,725		1,674		1,683		1,688		1,674		1,684		1,674		1,688		1,681		47		108,382
2009						1,484		1,506		1,501		1,498		1,511		1,514		1,514		1,509		42		103,198
2010								1,711		1,826		1,832		1,861		1,895		1,892		1,898		51		111,586
2011										2,235		2,244		2,269		2,286		2,296		2,287		66		125,358
2012												1,885		1,883		1,903		1,888		1,888		88		104,419
2013														1,615		1,623		1,620		1,609		122		82,936
2014																1,663		1,627		1,625		193		76,833
2015																		1,568		1,625		354		68,278
2016																				1,662		658		56,471
																Total			$	17,153
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	498	$	824	$	982	$	1,110	$	1,208	$	1,256	$	1,278	$	1,296	$	1,307	$	1,312
2008				712		1,103		1,264		1,396		1,490		1,551		1,581		1,602		1,617
2009						603		958		1,121		1,264		1,360		1,408		1,436		1,449
2010								709		1,180		1,395		1,579		1,698		1,763		1,798		Liability for Claims
2011										1,060		1,573		1,803		1,979		2,088		2,156		And Allocated Claim
2012												795		1,246		1,424		1,590		1,699		Adjustment Expenses,
2013														644		987		1,167		1,304		Net of Reinsurance
2014																628		956		1,154
2015																		595		970		2007 -		Before
2016																				585		2016		2007
Total																			$	14,044	$	3,109	$	305
																				Total net liability			$	3,414

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		39.5	%		22.9	%		10.8	%		8.8	%		6.0	%		3.3	%		1.8	%		1.1	%		0.9	%		0.4	%

Commercial Automobile

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	1,294	$	1,350	$	1,327	$	1,325	$	1,337	$	35		214,780
2013				1,235		1,236		1,240		1,245		67		197,041
2014						1,165		1,166		1,168		131		184,067
2015								1,198		1,215		246		179,963
2016										1,290		516		173,790
Total									$	6,255
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	467	$	753	$	960	$	1,134	$	1,235		Adjustment Expenses,
2013				435		675		884		1,039		Net of Reinsurance
2014						397		618		821
2015								409		658		2012 -		Before
2016										416		2016		2012
Total									$	4,169	$	2,086	$	184
										Total net liability			$	2,270

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		34.0	%		20.0	%		16.6	%		12.7	%		7.6	%

Workers' Compensation

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	1,554	$	1,519	$	1,484	$	1,448	$	1,390	$	1,373	$	1,358	$	1,340	$	1,328	$	1,341	$	217		103,064
2008				1,714		1,745		1,734		1,683		1,639		1,634		1,621		1,617		1,617		237		107,565
2009						1,799		1,778		1,746		1,753		1,753		1,766		1,775		1,750		272		104,229
2010								1,886		2,042		2,035		2,056		2,049		2,052		2,055		354		116,837
2011										2,284		2,303		2,347		2,350		2,379		2,385		430		135,061
2012												2,447		2,456		2,457		2,456		2,445		519		133,417
2013														2,553		2,545		2,540		2,506		651		128,111
2014																2,554		2,553		2,547		839		123,110
2015																		2,644		2,585		1,142		120,681
2016																				2,768		1,651		108,357
																Total			$	21,999
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	216	$	450	$	589	$	683	$	747	$	802	$	845	$	880	$	910	$	936
2008				274		571		752		875		961		1,036		1,088		1,130		1,162
2009						288		623		828		961		1,065		1,137		1,193		1,235
2010								341		750		978		1,133		1,246		1,321		1,385		Liability for Claims
2011										420		911		1,185		1,365		1,487		1,583		And Allocated Claim
2012												443		940		1,217		1,394		1,536		Adjustment Expenses,
2013														458		954		1,237		1,413		Net of Reinsurance
2014																455		944		1,224
2015																		430		893		2007 -		Before
2016																				421		2016		2007
Total																			$	11,788	$	10,211	$	5,228
																				Total net liability			$	15,439

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		17.0	%		19.2	%		11.2	%		7.4	%		5.4	%		4.1	%		3.2	%		2.5	%		2.1	%		1.9	%

International—Canada

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	632	$	626	$	616	$	608	$	607	$	609	$	611	$	608	$	601	$	597	$	4		66,327
2008				681		685		670		665		658		655		651		646		642		5		71,803
2009						724		718		707		714		714		702		696		690		13		71,671
2010								715		722		721		735		724		715		706		20		71,437
2011										723		696		686		682		678		669		30		72,063
2012												664		642		631		611		616		50		67,320
2013														723		717		701		685		56		71,183
2014																665		678		682		83		67,935
2015																		597		610		112		58,238
2016																				612		102		54,948
																Total			$	6,509
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	228	$	355	$	410	$	450	$	488	$	524	$	547	$	561	$	570	$	578
2008				256		406		460		501		543		579		603		616		622
2009						274		419		479		525		573		608		630		648
2010								258		403		465		522		573		615		641		Liability for Claims
2011										253		380		432		481		538		571		And Allocated Claim
2012												225		336		389		435		482		Adjustment Expenses,
2013														260		388		439		494		Net of Reinsurance
2014																252		382		445
2015																		228		346		2007 -		Before
2016																				295		2016		2007
Total																			$	5,122	$	1,387	$	95
																				Total net liability			$	1,482

	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	%		20.0	%		8.5	%		7.2	%		7.2	%		5.5	%		3.6	%		2.3	%		1.2	%		1.4	%

        The incurred and paid amounts have been translated from the local currency to U.S. dollars using the December 31, 2016 spot rate for all years presented in the table above in order to isolate changes in foreign exchange rates from loss development.

Bond & Specialty Insurance

General Liability

	(dollars in millions)
	For the Years Ended December 31,
	2007		2008		2009		2010		2011		2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
																						IBNR		Cumulative
																						Reserves		Number of
																						Dec. 31,		Reported
Accident Year																						2016		Claims
2007	$	584	$	571	$	638	$	582	$	551	$	511	$	479	$	467	$	462	$	454	$	4		11,018
2008				579		769		743		697		716		712		672		643		631		24		6,463
2009						592		624		665		686		680		660		655		641		24		6,287
2010								571		612		679		679		661		668		653		18		5,655
2011										565		596		639		632		601		545		34		5,191
2012												538		591		614		605		601		137		4,824
2013														510		565		606		630		204		4,371
2014																549		571		563		232		4,182
2015																		528		524		272		3,814
2016																				512		405		2,676
																Total			$	5,754
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year
2007	$	35	$	134	$	229	$	303	$	357	$	373	$	393	$	400	$	410	$	415
2008				47		157		281		387		471		529		562		579		590
2009						36		167		310		390		460		497		563		592
2010								33		152		291		396		482		565		597		Liability for Claims
2011										33		143		249		324		414		447		And Allocated Claim
2012												38		160		255		342		383		Adjustment Expenses,
2013														34		154		252		352		Net of Reinsurance
2014																38		150		239
2015																		38		141		2007 -		Before
2016																				30		2016		2007
																Total			$	3,786	$	1,968	$	74
																				Total net liability			$	2,042

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5			6			7			8			9			10
		6.3	%		19.7	%		18.8	%		15.1	%		12.1	%		7.5	%		6.2	%		3.0	%		1.9	%		1.1	%

Fidelity and Surety

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	255	$	262	$	249	$	175	$	140	$	9		1,148
2013				240		246		199		146		6		1,006
2014						223		212		165		32		992
2015								217		191		79		768
2016										226		128		595
Total									$	868
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	42	$	108	$	124	$	110	$	111		Adjustment Expenses,
2013				37		113		128		131		Net of Reinsurance
2014						58		96		111
2015								32		75		2012 -		Before
2016										54		2016		2012
Total									$	482	$	386	$	64
										Total net liability			$	450

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		26.1	%		36.2	%		10.1	%		(3.6)%(1	)		0.8	%

(1)

Includes recovery activity.

Personal Insurance

Automobile

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	2,417	$	2,454	$	2,448	$	2,432	$	2,428	$	15		793,669
2013				2,108		2,095		2,049		2,044		36		694,650
2014						2,014		1,994		1,981		75		669,990
2015								2,186		2,244		224		755,762
2016										2,779		646		839,962
Total									$	11,476
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	1,503	$	1,983	$	2,189	$	2,311	$	2,376		Adjustment Expenses,
2013				1,251		1,628		1,814		1,935		Net of Reinsurance
2014						1,193		1,564		1,763
2015								1,319		1,768		2012 -		Before
2016										1,610		2016		2012
Total									$	9,452	$	2,024	$	253
										Total net liability			$	2,277

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		60.0	%		19.2	%		9.2	%		5.5	%		2.7	%

Homeowners (excluding Other)

	(dollars in millions)
	For the Years Ended December 31,
	2012		2013		2014		2015		2016
	Incurred Claims and Allocated Claims Adjustment Expenses, Net of Reinsurance
		Unaudited
												IBNR		Cumulative
												Reserves		Number of
												Dec. 31,		Reported
Accident Year												2016		Claims
2012	$	2,136	$	2,056	$	2,029	$	2,018	$	2,019	$	1		259,006
2013				1,488		1,397		1,365		1,375		4		149,373
2014						1,515		1,450		1,453		9		151,517
2015								1,438		1,454		28		144,367
2016										1,556		307		129,630
		Total							$	7,857
	Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance
		Unaudited
Accident Year												Liability for Claims And Allocated Claim
2012	$	1,508	$	1,901	$	1,964	$	1,993	$	2,008		Adjustment Expenses,
2013				994		1,269		1,317		1,344		Net of Reinsurance
2014						1,053		1,338		1,402
2015								994		1,333		2012 -		Before
2016										1,049		2016		2012
Total									$	7,136	$	721	$	21
										Total net liability			$	742

	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance
	Unaudited
Years	1			2			3			4			5
		71.1	%		20.6	%		3.7	%		1.7	%		0.7	%