Segment Information - Schedule of continuing operations by operating segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Adjusted Revenues	$ 14,602	$ 12,835	$ 44,851	$ 37,970
Adjusted Pre-tax Income (Loss)	3,847	2,176	14,003	7,051
Changes in fair value of securities used to hedge guaranteed living benefits, Adjusted Revenues	14	14	41	46
Changes in fair value of securities used to hedge guaranteed living benefits	6	26	29	61
Changes in benefit reserves and DAC, VOBA and DSI related to net realized gains (losses)	(28)	9	(429)	(74)
Changes in the fair value of equity securities	16	(45)	(41)	(36)
Other income (expense) - net	(7)	(6)	(23)	(14)
Loss on extinguishment of debt	0	(51)	(299)	(149)
Net investment income on Fortitude Re funds withheld assets	2,668	3,715	8,509	11,047
Net realized gains (losses)	3,175	660	10,986	1,984
Net realized gains, adjusted revenues	1,446	643	3,242	1,192
Net realized gains, adjusted pre-tax income (loss)	1,449	652	3,257	1,220
Net gain on divestitures	6	102	45	108
Non-operating litigation reserves and settlements, adjustment to revenue	8	0	46	0
Non-operating litigation reserves and settlements, pre-tax income (loss)	3	(3)	41	(3)
Favorable prior year development and related amortization changes ceded under retroactive reinsurance agreements	62	115	206	199
Net loss reserve discount charge	(10)	(72)	(4)	(62)
Pension expense related to a one-time lump sum payment to former employees		(27)		(27)
Integration and transaction costs associated with acquiring or divesting businesses	(52)	(11)	(136)	(55)
Restructuring and other costs	(147)	(104)	(415)	(304)
Non-recurring costs related to regulatory or accounting changes	(9)	(17)	(22)	(58)
Fortitude Re funds withheld assets
Segment Reporting Information [Line Items]
Net investment income on Fortitude Re funds withheld assets	155	495	634	1,488
Net realized gains (losses)	(86)	190	(312)	536
Fortitude Re funds withheld embedded derivative
Segment Reporting Information [Line Items]
Net realized gains (losses)	1,757	(209)	7,851	117
Total
Segment Reporting Information [Line Items]
Adjusted Revenues	11,299	11,753	33,413	34,641
Adjusted Pre-tax Income (Loss)	725	1,126	3,598	4,090
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	(26)	95	203	373
Adjusted Pre-tax Income (Loss)	(614)	(562)	(1,496)	(1,702)
Other Operations before consolidation and eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	126	301	627	884
Adjusted Pre-tax Income (Loss)	(467)	(370)	(1,086)	(1,240)
Consolidation and eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	(152)	(206)	(424)	(511)
Adjusted Pre-tax Income (Loss)	(147)	(192)	(410)	(462)
General Insurance | Reportable Segments
Segment Reporting Information [Line Items]
Adjusted Revenues	6,989	7,214	20,854	20,798
Adjusted Pre-tax Income (Loss)	750	811	3,218	2,850
General Insurance | Reportable Segments | North America
Segment Reporting Information [Line Items]
Adjusted Revenues	3,140	2,907	8,901	7,980
Adjusted Pre-tax Income (Loss)	(439)	(166)	223	(199)
General Insurance | Reportable Segments | International
Segment Reporting Information [Line Items]
Adjusted Revenues	3,267	3,516	10,148	10,524
Adjusted Pre-tax Income (Loss)	607	186	1,190	755
General Insurance | Reportable Segments | Net investment income
Segment Reporting Information [Line Items]
Adjusted Revenues	582	791	1,805	2,294
Adjusted Pre-tax Income (Loss)	582	791	1,805	2,294
Life and Retirement | Reportable Segments
Segment Reporting Information [Line Items]
Adjusted Revenues	4,336	4,444	12,356	13,470
Adjusted Pre-tax Income (Loss)	589	877	1,876	2,942
Life and Retirement | Reportable Segments | Individual Retirement
Segment Reporting Information [Line Items]
Adjusted Revenues	1,312	1,560	3,985	4,556
Adjusted Pre-tax Income (Loss)	200	292	788	1,441
Life and Retirement | Reportable Segments | Group Retirement
Segment Reporting Information [Line Items]
Adjusted Revenues	680	832	2,106	2,458
Adjusted Pre-tax Income (Loss)	183	316	572	970
Life and Retirement | Reportable Segments | Life Insurance
Segment Reporting Information [Line Items]
Adjusted Revenues	1,234	1,211	3,820	3,839
Adjusted Pre-tax Income (Loss)	123	134	231	114
Life and Retirement | Reportable Segments | Institutional Markets
Segment Reporting Information [Line Items]
Adjusted Revenues	1,110	841	2,445	2,617
Adjusted Pre-tax Income (Loss)	$ 83	$ 135	$ 285	$ 417