Equity (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	$ (65)		$ (64)		$ (161)	$ (131)
Net derivative gains (losses)	(1,825)		1,980		(2,413)	1,919	$ (585)	$ (3,986)
Net investment income	1,172		1,044		2,207	2,179
Pre-tax adjusted earnings	(282)		2,152		(974)	4,138
Income tax (expense) benefit	73		(419)		240	(831)
Net income (loss)	(209)	$ (525)	1,733	$ 1,574	(734)	3,307	$ 3,711	$ 1,763
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(40)		(44)		(95)	(75)
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized investment gains (losses):
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment gains (losses)	(48)		(58)		(116)	(97)
Net derivative gains (losses)	(7)		(3)		(8)	(5)
Pre-tax adjusted earnings	(55)		(61)		(124)	(102)
Income tax (expense) benefit	12		12		26	21
Net income (loss)	(43)		(49)		(98)	(81)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pre-tax adjusted earnings	4		5		4	7
Income tax (expense) benefit	(1)		0		(1)	(1)
Net income (loss)	3		5		3	6
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Interest rate swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	(2)		3		(2)	4
Net investment income	1		1		2	2
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Foreign currency swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net derivative gains (losses)	$ 5		$ 1		$ 4	$ 1