Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)									$ (2,824)	$ (1,260)	$ 1,543
Net investment income									19,908	15,916	21,395
Net derivative gains (losses)									(2,140)	(2,251)	(3,257)
Other expenses									$ 12,710	$ 11,859	$ 12,018
Amortization of net actuarial gains (losses) [Extensible Enumeration]									Total recognized in OCI	Total recognized in OCI	Total recognized in OCI
Amortization of prior service (costs) credit [Extensible Enumeration]									Total recognized in OCI	Total recognized in OCI	Total recognized in OCI
Income (loss) from continuing operations before provision for income tax									$ 2,162	$ 6,364	$ 8,518
Income tax (expense) benefit									(560)	(1,062)	(1,642)
Net income (loss)	$ 614	$ 495	$ 408	$ 85	$ 1,581	$ 1,167	$ 915	$ 1,639	1,602	5,302	6,876
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)									(1,544)	(1,735)	(189)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Investment Gains (Losses), Net of Related Offsets
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)									(2,620)	(1,802)	72
Net investment income									8	7	(16)
Net derivative gains (losses)									89	188	69
Income (loss) from continuing operations before provision for income tax									(2,523)	(1,607)	125
Income tax (expense) benefit									537	368	(29)
Net income (loss)									(1,986)	(1,239)	96
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before provision for income tax									705	(498)	(250)
Income tax (expense) benefit									(170)	76	39
Net income (loss)									535	(422)	(211)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)									90	41	84
Net investment income									50	59	56
Other expenses									0	4	3
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Foreign currency swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)									558	(609)	(403)
Net investment income									4	6	8
Other expenses									2	1	2
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Credit derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)									1	0	0
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plans Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net actuarial gains (losses)									(130)	(104)	(120)
Amortization of prior service (costs) credit									11	11	29
Income (loss) from continuing operations before provision for income tax									(119)	(93)	(91)
Income tax (expense) benefit									26	19	17
Net income (loss)									$ (93)	$ (74)	$ (74)