Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (1,184)	$ (2,824)	$ (1,260)
Net investment income	21,273	19,908	15,916
Net derivative gains (losses)	(1,623)	(2,140)	(2,251)
Other expenses	$ 13,017	$ 12,710	$ 11,859
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	$ 5,622	$ 2,162	$ 6,364
Income tax (expense) benefit	(1,178)	(560)	(1,062)
Net income (loss)	4,444	1,602	5,302
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(1,263)	(1,544)	(1,735)
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)	(784)	(2,620)	(1,802)
Net investment income	2	8	7
Net derivative gains (losses)	30	89	188
Income (loss) from continuing operations before provision for income tax	(752)	(2,523)	(1,607)
Income tax (expense) benefit	177	537	368
Net income (loss)	(575)	(1,986)	(1,239)
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	(760)	705	(498)
Income tax (expense) benefit	168	(170)	76
Net income (loss)	(592)	535	(422)
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)	(5)	90	41
Net investment income	33	50	59
Other expenses	0	0	4
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)	(794)	558	(609)
Net investment income	4	4	6
Other expenses	1	2	1
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	1	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)	(139)	(130)	(104)
Amortization of prior service (costs) credit	11	11	11
Income (loss) from continuing operations before provision for income tax	(128)	(119)	(93)
Income tax (expense) benefit	32	26	19
Net income (loss)	$ (96)	$ (93)	$ (74)