Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (1,262)	$ 1,529	$ (110)
Net investment income	15,916	21,395	17,117
Net derivative gains (losses)	(2,372)	(2,228)	1,349
Other expenses	$ 12,034	$ 12,586	$ 13,150
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	$ 2,859	$ 8,126	$ 6,927
Income tax (expense) benefit	(301)	(1,551)	(1,509)
Net income (loss)	2,558	6,575	5,418
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(1,735)	(189)	866
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)	(1,802)	72	362
Net investment income	7	(16)	(24)
Net derivative gains (losses)	188	69	19
Income (loss) from continuing operations before provision for income tax	(1,607)	125	357
Income tax (expense) benefit	368	(29)	(83)
Net income (loss)	(1,239)	96	274
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	(498)	(250)	1,016
Income tax (expense) benefit	76	39	(358)
Net income (loss)	(422)	(211)	658
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)	41	84	121
Net investment income	59	56	36
Other expenses	4	3	2
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)	(609)	(403)	851
Net investment income	6	8	4
Other expenses	1	2	2
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)	(104)	(120)	(105)
Amortization of prior service (costs) credit	11	29	19
Income (loss) from continuing operations before provision for income tax	(93)	(91)	(86)
Income tax (expense) benefit	19	17	20
Net income (loss)	$ (74)	$ (74)	$ (66)