Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (421)		$ (1,039)		$ (796)	$ (1,723)
Net investment income	5,205		5,072		10,641	9,717
Net derivative gains (losses)	(508)		(997)		(1,487)	(1,087)
Other expenses	3,180		3,133		6,397	6,190
Income (loss) from continuing operations before provision for income tax	1,202		430		2,247	687
Income tax (expense) benefit	(249)		(22)		(419)	(194)
Net income (loss)	953	$ 875	408	$ 85	1,828	493
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(144)		(620)		(568)	(982)
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)	(250)		(1,079)		(409)	(1,690)
Net investment income	1		3		0	5
Net derivative gains (losses)	1		36		16	79
Income (loss) from continuing operations before provision for income tax	(248)		(1,040)		(393)	(1,606)
Income tax (expense) benefit	59		231		91	360
Net income (loss)	(189)		(809)		(302)	(1,246)
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	(3)		269		(360)	401
Income tax (expense) benefit	74		(54)		147	(87)
Net income (loss)	71		215		(213)	314
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)	(3)		55		(1)	60
Net investment income	5		13		13	27
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)	(8)		200		(376)	311
Net investment income	2		1		3	2
Other expenses	0		0		0	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		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)	(34)		(32)		(69)	(65)
Amortization of prior service (costs) credit	2		2		5	5
Income (loss) from continuing operations before provision for income tax	(32)		(30)		(64)	(60)
Income tax (expense) benefit	6		4		11	10
Net income (loss)	$ (26)		$ (26)		$ (53)	$ (50)