Accumulated Other Comprehensive Income - Reclassifications (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)	$ (2,478)	$ (6,451)	$ (6,714)
Amortization of deferred acquisition costs	519	(533)	(1,003)
Pretax adjusted operating earnings	4,047	(2,491)	(811)
Income tax expense (benefit)	602	(854)	(369)
Net income (loss)	3,445	(1,637)	(442)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)	(942)	(1,138)	113
Amortization of deferred acquisition costs	32	247	(31)
Pretax adjusted operating earnings	(910)	(891)	82
Income tax expense (benefit)	(197)	(187)	17
Net income (loss)	(713)	(704)	65
Reclassification out of Accumulated Other Comprehensive Income | Net realized gain (loss) on investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)	(932)	(1,148)	114
Reclassification out of Accumulated Other Comprehensive Income | Other impaired securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss)	$ (10)	$ 10	$ (1)