Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (273)		$ (421)		$ (660)	$ (796)
Net investment income	5,661		5,205		10,546	10,641
Net derivative gains (losses)	(796)		(508)		(364)	(1,487)
Other expenses	3,319		3,180		6,669	6,397
Income (loss) from continuing operations before provision for income tax	980		1,202		2,334	2,247
Income tax (expense) benefit	(245)		(249)		(649)	(419)
Net income (loss)	735	$ 950	953	$ 875	1,685	1,828
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	778		(144)		870	(568)
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)	(97)		(250)		(382)	(409)
Net investment income	(8)		1		(8)	0
Net derivative gains (losses)	5		1		49	16
Income (loss) from continuing operations before provision for income tax	(100)		(248)		(341)	(393)
Income tax (expense) benefit	21		59		75	91
Net income (loss)	(79)		(189)		(266)	(302)
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	1,102		(3)		1,481	(360)
Income tax (expense) benefit	(229)		74		(305)	147
Net income (loss)	873		71		1,176	(213)
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)	9		(3)		9	(1)
Net investment income	6		5		23	13
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)	1,086		(8)		1,446	(376)
Net investment income	1		2		3	3
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives | Credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	0		1		0	1
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)	(25)		(34)		(59)	(69)
Amortization of prior service (costs) credit	3		2		6	5
Income (loss) from continuing operations before provision for income tax	(22)		(32)		(53)	(64)
Income tax (expense) benefit	6		6		13	11
Net income (loss)	$ (16)		$ (26)		$ (40)	$ (53)