Acquisitions and Dispositions - Financial results from discontinued operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Costs and expenses
Income from discontinued operations before income tax expense	$ 0	$ 493	$ 0	$ (3,670)
Income tax expense	0	297	0	(73)
Total from discontinued operations	$ 0	196	$ 0	(3,597)
Discontinued Operations, Held-for-sale
Revenues
Life premiums and contract charges		336		676
Net investment income		385		824
Net gains (losses) on investments and derivatives		110		189
Total revenues		831		1,689
Costs and expenses
Life contract benefits		386		796
Interest credited to contractholder funds		159		244
Amortization of DAC		21		57
Operating costs and expenses		51		106
Restructuring and related charges		4		23
Total costs and expenses		621		1,226
Amortization of deferred gain on reinsurance		2		4
Income from discontinued operations before income tax expense		212		467
Income tax expense		43		93
Income from discontinued operations, net of tax		169		374
Loss on disposition of operations		281		(4,137)
Income tax expense (benefit)		254		(166)
Loss on disposition of operations, net of tax		27		(3,971)
Total from discontinued operations		$ 196		$ (3,597)