Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2023

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Schedule of other comprehensive income (loss) on a pre-tax and after-tax basis

Components of other comprehensive income (loss) on a pre-tax and after-tax basis
($ in millions)	Three months ended March 31,
	2023						2022
	Pre-tax		Tax		After-tax		Pre-tax		Tax		After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets	$	729	$	(156)	$	573	$	(2,149)	$	458	$	(1,691)
Less: reclassification adjustment of realized capital gains and losses	(138)		29		(109)		(123)		26		(97)
Unrealized net capital gains and losses	867		(185)		682		(2,026)		432		(1,594)
Unrealized foreign currency translation adjustments	63		(13)		50		—		—		—
Unamortized pension and other postretirement prior service credit (1)	(6)		2		(4)		(19)		4		(15)
Discount rate for reserve for future policy benefits	(11)		2		(9)		120		(25)		95
Other comprehensive income (loss)	$	913	$	(194)	$	719	$	(1,925)	$	411	$	(1,514)

(1)    Represents prior service credits reclassified out of other comprehensive income and amortized into operating costs and expenses.