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

6 Months Ended

Jun. 30, 2023

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
	Six months ended June 30,
($ in millions)	2023		2022
Balance as of January 1	$	37,541	$	33,060
Less recoverables (1)	(9,176)		(9,479)
Net balance as of January 1	28,365		23,581
Incurred claims and claims expense related to:
Current year	21,856		16,585
Prior years	197		604
Total incurred	22,053		17,189
Claims and claims expense paid related to:
Current year	(9,094)		(7,753)
Prior years	(9,523)		(7,691)
Total paid	(18,617)		(15,444)
Net balance as of June 30	31,801		25,326
Plus recoverables	8,730		8,950
Balance as of June 30	$	40,531	$	34,276

(1)Recoverables comprises reinsurance and indemnification recoverables.

Prior year reserve reestimates included in claims and claims expense (1)
	Non-catastrophe losses				Catastrophe losses				Total
($ in millions)	2023		2022		2023		2022		2023		2022
Three months ended June 30,
Auto	$	116	$	275	$	(19)	$	(38)	$	97	$	237
Homeowners	41		50		53		85		94		135
Other personal lines	8		(5)		(5)		3		3		(2)
Commercial lines	6		91		2		1		8		92
Other business lines	10		(3)		—		—		10		(3)
Run-off Property-Liability	1		3		—		—		1		3
Protection Services	(1)		(3)		—		—		(1)		(3)
Total prior year reserve reestimates	$	181	$	408	$	31	$	51	$	212	$	459
Six months ended June 30,
Auto	$	119	$	426	$	(47)	$	(47)	$	72	$	379
Homeowners	29		54		45		74		74		128
Other personal lines	18		(16)		(12)		7		6		(9)
Commercial lines	29		111		3		—		32		111
Other business lines	11		(10)		—		4		11		(6)
Run-off Property-Liability	3		4		—		—		3		4
Protection Services	(1)		(3)		—		—		(1)		(3)
Total prior year reserve reestimates	$	208	$	566	$	(11)	$	38	$	197	$	604

(1)Favorable reserve reestimates are shown in parentheses.