Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (414)	$ (84)			$ (1,617)	$ 1,655
Net investment income	3,585	5,568			11,452	16,162
Net derivative gains (losses)	(480)	(218)			(2,534)	(2,032)
Other expenses	2,723	3,284			8,826	9,315
Income (loss) from continuing operations before provision for income tax	419	2,042			1,132	6,820
Income tax (expense) benefit	(19)	(453)			80	(1,456)
Net income (loss)	400	1,589	$ 812	$ 3,775	1,212	5,364
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(705)	(140)			(2,107)	(208)
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)	(336)	97			(1,458)	42
Net investment income	0	(4)			4	(13)
Net derivative gains (losses)	(7)	(2)			108	47
Income (loss) from continuing operations before provision for income tax	(343)	91			(1,346)	76
Income tax (expense) benefit	77	(22)			307	(18)
Net income (loss)	(266)	69			(1,039)	58
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	(566)	(236)			(1,307)	(279)
Income tax (expense) benefit	145	54			297	64
Net income (loss)	(421)	(182)			(1,010)	(215)
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)	(16)	6			44	54
Net investment income	15	14			46	41
Other expenses	1	1			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)	(567)	(259)			(1,405)	(383)
Net investment income	1	2			4	6
Other expenses	0	0			1	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)			(78)	(87)
Amortization of prior service (costs) credit	2	4			8	26
Income (loss) from continuing operations before provision for income tax	(23)	(30)			(70)	(61)
Income tax (expense) benefit	5	3			12	10
Net income (loss)	$ (18)	$ (27)			$ (58)	$ (51)