Segment Information - Schedule of continuing operations by operating segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Adjusted Revenues	$ 14,441	$ 10,681	$ 30,249	$ 25,135
Adjusted Pre-tax Income (Loss)	4,321	147	10,156	4,875
Changes in fair value of securities used to hedge guaranteed living benefits, Adjusted Revenues	13	14	27	32
Changes in fair value of securities used to hedge guaranteed living benefits	10	13	23	35
Changes in benefit reserves and DAC, VOBA and DSI related to net realized gains (losses)	(128)	120	(401)	(83)
Changes in the fair value of equity securities	(30)	(13)	(57)	9
Other income (expense) - net	(9)	(2)	(16)	(8)
Loss on extinguishment of debt	(299)	(106)	(299)	(98)
Net investment income on Fortitude Re funds withheld assets	2,604	3,675	5,841	7,332
Total net realized gains (losses)	3,392	(1,926)	7,811	1,324
Net realized gains, adjusted revenues	615	(68)	1,796	549
Net realized gains, adjusted pre-tax income (loss)	620	(59)	1,808	568
Net loss on divestitures	(1)	(1)	39	6
Non-operating litigation reserves and settlements	4	0	38	0
Favorable prior year development and related amortization changes ceded under retroactive reinsurance agreements	144	65	144	84
Net loss reserve discount charge	(14)	(22)	6	10
Integration and transaction costs associated with acquiring or divesting businesses	(38)	(35)	(84)	(44)
Restructuring and other costs	(175)	(126)	(268)	(200)
Non-recurring costs related to regulatory or accounting changes	(9)	(21)	(13)	(41)
Fortitude Re funds withheld assets
Segment Reporting Information [Line Items]
Net investment income on Fortitude Re funds withheld assets	188	507	479	993
Total net realized gains (losses)	(86)	173	(226)	346
Fortitude Re funds withheld embedded derivative
Segment Reporting Information [Line Items]
Total net realized gains (losses)	2,776	(2,056)	6,094	326
Total
Segment Reporting Information [Line Items]
Adjusted Revenues	10,970	12,126	22,114	22,888
Adjusted Pre-tax Income (Loss)	1,359	1,708	2,873	2,964
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	71	134	229	278
Adjusted Pre-tax Income (Loss)	(461)	(610)	(882)	(1,140)
Other Operations before consolidation and eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	207	259	501	583
Adjusted Pre-tax Income (Loss)	(331)	(516)	(619)	(870)
Consolidation and eliminations
Segment Reporting Information [Line Items]
Adjusted Revenues	(136)	(125)	(272)	(305)
Adjusted Pre-tax Income (Loss)	(130)	(94)	(263)	(270)
General Insurance | Reportable Segments
Segment Reporting Information [Line Items]
Adjusted Revenues	6,844	6,946	13,865	13,584
Adjusted Pre-tax Income (Loss)	1,257	1,194	2,468	2,039
General Insurance | Reportable Segments | North America
Segment Reporting Information [Line Items]
Adjusted Revenues	2,972	2,685	5,761	5,073
Adjusted Pre-tax Income (Loss)	406	169	662	(33)
General Insurance | Reportable Segments | International
Segment Reporting Information [Line Items]
Adjusted Revenues	3,414	3,530	6,881	7,008
Adjusted Pre-tax Income (Loss)	393	294	583	569
General Insurance | Reportable Segments | Net investment income
Segment Reporting Information [Line Items]
Adjusted Revenues	458	731	1,223	1,503
Adjusted Pre-tax Income (Loss)	458	731	1,223	1,503
Life and Retirement | Reportable Segments
Segment Reporting Information [Line Items]
Adjusted Revenues	4,055	5,046	8,020	9,026
Adjusted Pre-tax Income (Loss)	563	1,124	1,287	2,065
Life and Retirement | Reportable Segments | Individual Retirement
Segment Reporting Information [Line Items]
Adjusted Revenues	1,288	1,519	2,673	2,996
Adjusted Pre-tax Income (Loss)	204	617	588	1,149
Life and Retirement | Reportable Segments | Group Retirement
Segment Reporting Information [Line Items]
Adjusted Revenues	682	820	1,426	1,626
Adjusted Pre-tax Income (Loss)	164	347	389	654
Life and Retirement | Reportable Segments | Life Insurance
Segment Reporting Information [Line Items]
Adjusted Revenues	1,299	1,295	2,586	2,628
Adjusted Pre-tax Income (Loss)	117	20	108	(20)
Life and Retirement | Reportable Segments | Institutional Markets
Segment Reporting Information [Line Items]
Adjusted Revenues	786	1,412	1,335	1,776
Adjusted Pre-tax Income (Loss)	$ 78	$ 140	$ 202	$ 282