Segment Information - Schedule of continuing operations by operating segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 56,437	$ 52,057	$ 43,736
Adjusted Pre-tax Income (Loss)	14,282	12,099	(7,293)
Net Investment Income	11,767	14,612	13,631
Interest expense	1,125	1,305	1,457
Amortization of deferred policy acquisition costs	4,970	4,573	4,211
Changes in fair value of securities used to hedge guaranteed living benefits, Adjusted Revenues	55	60	56
Changes in fair value of securities used to hedge guaranteed living benefits	30	61	41
Changes in benefit reserves and DAC, VOBA and DSI related to net realized gains (losses), Amortization of DAC	302	33	(9)
Changes in benefit reserves and DAC, VOBA and DSI related to net realized gains (losses)	(308)	(52)	12
Changes in the fair value of equity securities	(53)	(237)	200
Other income (expense) - net	(29)	(24)	49
Other income (expense) - net, investment income	28	33	99
Other income (expense) - net, interest expense	28	33	99
Loss on extinguishment of debt	(303)	(389)	(12)
Net realized gains (losses)	8,991	2,151	(2,238)
Net realized gains, adjusted revenues	1,731	1,585	(148)
Net realized gains, adjusted net investment income	(244)	(156)	(98)
Net realized gains, adjusted interest expense	(1)	(13)	(33)
Net realized gains, adjusted pre-tax income (loss)	1,750	1,623	(97)
Net gain (loss) on divestitures and other	(82)	3,044	(8,525)
Non-operating litigation reserves and settlements, adjustment to revenue	49	0	23
Non-operating litigation reserves and settlements, pre-tax income (loss)	41	(3)	21
(Unfavorable) favorable prior year development and related amortization changes ceded under retroactive reinsurance agreements	160	186	221
Net loss reserve discount benefit	703	193	(516)
Pension expense related to a one-time lump sum payment to former employees	(60)	(34)
Integration and transaction costs associated with acquiring or divesting businesses	(194)	(83)	(12)
Restructuring and other costs	(570)	(433)	(435)
Non-recurring costs related to regulatory or accounting changes	(37)	(68)	(65)
Net impact from elimination of international reporting lag, adjusted revenues	978
Net impact from elimination of international reporting lag, net investment income	41
Net impact from elimination of international reporting lag, adjusted pre-tax income (loss)	127
Fortitude Re funds withheld assets
Segment Reporting Information [Line Items]
Net Investment Income	943	1,971	1,053
Net realized gains (losses)	(486)	1,003	463
Fortitude Re funds withheld embedded derivative
Segment Reporting Information [Line Items]
Net realized gains (losses)	7,481	(603)	(2,645)
Total
Segment Reporting Information [Line Items]
Revenues	45,768	48,302	44,685
Adjusted Pre-tax Income (Loss)	5,140	5,920	3,003
Net Investment Income	10,997	12,941	12,321
Interest expense	1,098	1,285	1,391
Amortization of deferred policy acquisition costs	4,668	4,540	4,220
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Revenues	392	347	823
Adjusted Pre-tax Income (Loss)	(1,947)	(2,350)	(2,429)
Net Investment Income	268	116	515
Interest expense	1,075	1,155	1,236
Amortization of deferred policy acquisition costs	5	37	50
Other Operations before consolidation and eliminations
Segment Reporting Information [Line Items]
Revenues	827	1,338	1,385
Adjusted Pre-tax Income (Loss)	(1,542)	(1,418)	(1,963)
Net Investment Income	714	1,112	1,087
Interest expense	1,131	1,220	1,306
Amortization of deferred policy acquisition costs	5	37	50
Consolidation and eliminations
Segment Reporting Information [Line Items]
Revenues	(435)	(991)	(562)
Adjusted Pre-tax Income (Loss)	(405)	(932)	(466)
Net Investment Income	(446)	(996)	(572)
Interest expense	(56)	(65)	(70)
Amortization of deferred policy acquisition costs	0	0	0
General Insurance | Reportable Segments
Segment Reporting Information [Line Items]
Revenues	27,722	28,361	26,587
Adjusted Pre-tax Income (Loss)	4,430	4,359	1,901
Net Investment Income	2,382	3,304	2,925
Amortization of deferred policy acquisition costs	3,533	3,530	3,538
General Insurance | Reportable Segments | North America
Segment Reporting Information [Line Items]
Revenues	12,071	10,989	10,302
Adjusted Pre-tax Income (Loss)	648	(47)	(1,301)
Amortization of deferred policy acquisition costs	1,585	1,333	1,365
General Insurance | Reportable Segments | International
Segment Reporting Information [Line Items]
Revenues	13,269	14,068	13,360
Adjusted Pre-tax Income (Loss)	1,400	1,102	277
Amortization of deferred policy acquisition costs	1,948	2,197	2,173
General Insurance | Reportable Segments | Net investment income
Segment Reporting Information [Line Items]
Revenues	2,382	3,304	2,925
Adjusted Pre-tax Income (Loss)	2,382	3,304	2,925
Net Investment Income	2,382	3,304	2,925
Amortization of deferred policy acquisition costs	0	0	0
Life and Retirement | Reportable Segments
Segment Reporting Information [Line Items]
Revenues	17,654	19,594	17,275
Adjusted Pre-tax Income (Loss)	2,657	3,911	3,531
Net Investment Income	8,347	9,521	8,881
Interest expense	23	130	155
Amortization of deferred policy acquisition costs	1,130	973	632
Life and Retirement | Reportable Segments | Individual Retirement
Segment Reporting Information [Line Items]
Revenues	5,415	6,083	5,714
Adjusted Pre-tax Income (Loss)	1,222	1,939	1,938
Net Investment Income	3,898	4,338	4,131
Interest expense	11	61	72
Amortization of deferred policy acquisition costs	761	736	590
Life and Retirement | Reportable Segments | Group Retirement
Segment Reporting Information [Line Items]
Revenues	2,780	3,291	2,970
Adjusted Pre-tax Income (Loss)	749	1,284	1,013
Net Investment Income	2,005	2,410	2,236
Interest expense	6	35	42
Amortization of deferred policy acquisition costs	96	61	7
Life and Retirement | Reportable Segments | Life Insurance
Segment Reporting Information [Line Items]
Revenues	5,299	5,112	4,877
Adjusted Pre-tax Income (Loss)	337	106	142
Net Investment Income	1,393	1,619	1,526
Interest expense	4	25	30
Amortization of deferred policy acquisition costs	267	170	30
Life and Retirement | Reportable Segments | Institutional Markets
Segment Reporting Information [Line Items]
Revenues	4,160	5,108	3,714
Adjusted Pre-tax Income (Loss)	349	582	438
Net Investment Income	1,051	1,154	988
Interest expense	2	9	11
Amortization of deferred policy acquisition costs	$ 6	$ 6	$ 5