Reserve for Property and Casualty Insurance Claims and Claims Expense (Tables)

3 Months Ended

Mar. 31, 2022

Reserve for Property-Liability Insurance Claims and Claims Expense [Abstract]

Schedule of liability for unpaid claims and claims adjustment expense

Rollforward of the reserve for property and casualty insurance claims and claims expense
	Three months ended March 31,
($ in millions)	2022		2021
Balance as of January 1	$	33,060	$	27,610
Less recoverables (1)	(9,479)		(7,033)
Net balance as of January 1	23,581		20,577
National General acquisition as of January 4, 2021	—		1,797
Incurred claims and claims expense related to:
Current year	7,677		6,284
Prior years	145		(241)
Total incurred	7,822		6,043
Claims and claims expense paid related to:
Current year	(2,751)		(2,541)
Prior years	(4,735)		(3,731)
Total paid	(7,486)		(6,272)
Net balance as of March 31	23,917		22,145
Plus recoverables	9,074		9,269
Balance as of March 31	$	32,991	$	31,414

(1)Recoverables comprises reinsurance and indemnification recoverables.

Prior year reserve reestimates included in claims and claims expense (1)
	Three months ended March 31,
	Non-catastrophe losses				Catastrophe losses				Total
($ in millions)	2022		2021		2022		2021 (2) (3)		2022		2021
Auto	$	151	$	(17)	$	(9)	$	(19)	$	142	$	(36)
Homeowners	(3)		5		(7)		(208)		(10)		(203)
Other personal lines	(11)		—		4		(18)		(7)		(18)
Commercial lines	20		13		(1)		2		19		15
Run-off Property-Liability	1		1		—		—		1		1
Total prior year reserve reestimates	$	158	$	2	$	(13)	$	(243)	$	145	$	(241)

(1)Favorable reserve reestimates are shown in parentheses.

(2)Included approximately $150 million of estimated recoveries related to Nationwide Aggregate Reinsurance Program cover for aggregate catastrophe losses occurring between April 1, 2020 and December 31, 2020, which primarily impacted homeowners reestimates.

(3)Included approximately $110 million favorable subrogation settlements arising from the Woolsey wildfire, which primarily impacted homeowners reestimates.