Segment Information - Schedule of continuing operations by operating segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 10,984	$ 14,944
Adjusted Pre-tax Income (Loss)	(231)	5,714
Net Investment Income	3,533	3,237
Interest expense	307	263
Amortization of deferred policy acquisition costs	1,293	1,137
Changes in fair value of securities used to hedge guaranteed living benefits, Adjusted Revenues	13	14
Changes in fair value of securities used to hedge guaranteed living benefits	(3)	13
Change in the fair value of market risk benefits, net	(196)	233
Changes in benefit reserves related to net realized gains (losses)	6	2
Changes in the fair value of equity securities	51	(27)
Other income (expense) - net	(7)	(7)
Net realized gains (losses)	(1,909)	3,579
Net realized gains, adjusted revenues	(772)	341
Net realized gains, adjusted pre-tax income (loss)	(766)	349
Net gain (loss) on divestitures and other	(2)	40
Non-operating litigation reserves and settlements, adjustment to revenue	1	34
Non-operating litigation reserves and settlements, pre-tax income (loss)	1	34
(Unfavorable) favorable prior year development and related amortization changes ceded under retroactive reinsurance agreements	19	0
Net loss reserve discount charge	(64)	20
Integration and transaction costs associated with acquiring or divesting businesses	(52)	(46)
Restructuring and other costs	(117)	(93)
Non-recurring costs related to regulatory or accounting changes	(13)	(4)
Net impact from elimination of international reporting lag, adjusted revenues	4
Net impact from elimination of international reporting lag, adjusted pre-tax income (loss)	12
Fortitude Re funds withheld assets
Segment Reporting Information [Line Items]
Net Investment Income	446	291
Net realized gains (losses)	(31)	(140)
Fortitude Re funds withheld embedded derivative
Segment Reporting Information [Line Items]
Net realized gains (losses)	(1,165)	3,318
Total
Segment Reporting Information [Line Items]
Revenues	12,444	11,120
Adjusted Pre-tax Income (Loss)	1,643	1,724
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Revenues	68	158
Adjusted Pre-tax Income (Loss)	(491)	(421)
Other Operations before consolidation and eliminations
Segment Reporting Information [Line Items]
Revenues	132	294
Adjusted Pre-tax Income (Loss)	(434)	(288)
Consolidation and eliminations
Segment Reporting Information [Line Items]
Revenues	(64)	(136)
Adjusted Pre-tax Income (Loss)	(57)	(133)
General Insurance | Reportable Segments
Segment Reporting Information [Line Items]
Revenues	7,005	7,021
Adjusted Pre-tax Income (Loss)	1,248	1,211
General Insurance | Reportable Segments | North America
Segment Reporting Information [Line Items]
Revenues	2,980	2,789
Adjusted Pre-tax Income (Loss)	299	256
General Insurance | Reportable Segments | International
Segment Reporting Information [Line Items]
Revenues	3,279	3,467
Adjusted Pre-tax Income (Loss)	203	190
General Insurance | Reportable Segments | Net investment income
Segment Reporting Information [Line Items]
Revenues	746	765
Adjusted Pre-tax Income (Loss)	746	765
Life and Retirement | Reportable Segments
Segment Reporting Information [Line Items]
Revenues	5,371	3,941
Adjusted Pre-tax Income (Loss)	886	934
Life and Retirement | Reportable Segments | Individual Retirement
Segment Reporting Information [Line Items]
Revenues	1,484	1,347
Adjusted Pre-tax Income (Loss)	533	466
Life and Retirement | Reportable Segments | Group Retirement
Segment Reporting Information [Line Items]
Revenues	683	734
Adjusted Pre-tax Income (Loss)	187	241
Life and Retirement | Reportable Segments | Life Insurance
Segment Reporting Information [Line Items]
Revenues	1,249	1,311
Adjusted Pre-tax Income (Loss)	82	113
Life and Retirement | Reportable Segments | Institutional Markets
Segment Reporting Information [Line Items]
Revenues	1,955	549
Adjusted Pre-tax Income (Loss)	$ 84	$ 114