Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2025

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

Schedule of Components 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,
	2025						2024
	Pre-tax		Tax		After-tax		Pre-tax		Tax		After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets	$	389	$	(85)	$	304	$	(375)	$	80	$	(295)
Less: reclassification adjustment of realized capital gains and losses	(147)		31		(116)		(101)		21		(80)
Unrealized net capital gains and losses	536		(116)		420		(274)		59		(215)
Unrealized foreign currency translation adjustments	(57)		12		(45)		10		(2)		8
Unamortized pension and other postretirement prior service credit (1)	—		—		—		(1)		—		(1)
Discount rate for reserve for future policy benefits	6		(1)		5		32		(7)		25
Other comprehensive income (loss)	$	485	$	(105)	$	380	$	(233)	$	50	$	(183)

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