Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (77)	$ (927)			$ (873)	$ (2,650)
Net investment income	5,227	4,825			15,868	14,542
Net derivative gains (losses)	767	(1,202)			(720)	(2,289)
Other expenses	3,263	3,204			9,660	9,394
Income (loss) from continuing operations before provision for income tax	1,994	534			4,241	1,221
Income tax (expense) benefit	(653)	(39)			(1,072)	(233)
Net income (loss)	1,341	495	$ 1,828	$ 493	3,169	988
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	304	(776)			(264)	(1,758)
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)	(122)	(730)			(531)	(2,420)
Net investment income	0	1			0	6
Net derivative gains (losses)	1	19			17	98
Income (loss) from continuing operations before provision for income tax	(121)	(710)			(514)	(2,316)
Income tax (expense) benefit	33	172			124	532
Net income (loss)	(88)	(538)			(390)	(1,784)
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	607	(271)			247	130
Income tax (expense) benefit	(192)	57			(45)	(30)
Net income (loss)	415	(214)			202	100
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Interest Rate Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	(1)	17			(2)	77
Net investment income	5	11			18	38
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)	602	(301)			226	10
Net investment income	1	1			4	3
Other expenses	0	1			0	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)	0	0			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)	(35)	(33)			(104)	(98)
Amortization of prior service (costs) credit	3	3			8	8
Income (loss) from continuing operations before provision for income tax	(32)	(30)			(96)	(90)
Income tax (expense) benefit	9	6			20	16
Net income (loss)	$ (23)	$ (24)			$ (76)	$ (74)