Acquisitions and Dispositions - Financial results from discontinued operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Costs and expenses
Income from discontinued operations before income tax expense	$ 0	$ 235	$ 0	$ (3,435)
Income tax expense	0	(90)	0	(163)
Income (loss) from discontinued operations, net of tax	$ 0	325	$ 0	(3,272)
Discontinued Operations, Held-for-sale
Revenues
Life premiums and contract charges		331		1,007
Net investment income		427		1,251
Net gains (losses) on investments and derivatives		4		193
Total revenues		762		2,451
Costs and expenses
Life contract benefits		411		1,207
Interest credited to contractholder funds		127		371
Amortization of DAC		27		84
Operating costs and expenses		45		151
Restructuring and related charges		7		30
Total costs and expenses		617		1,843
Amortization of deferred gain on reinsurance		1		5
Income from discontinued operations before income tax expense		146		613
Income tax expense		38		131
Income from discontinued operations, net of tax		108		482
Loss on disposition of operations		89		(4,048)
Income tax benefit		(128)		(294)
Loss on disposition of operations, net of tax		217		(3,754)
Income (loss) from discontinued operations, net of tax		$ 325		$ (3,272)