Business Held for Sale and Discontinued Operations - Discontinued Operations Income Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Benefits and expenses:
Income (loss) from discontinued operations, net of tax	$ (140)	$ (4)	$ (361)	$ 18
Discontinued Operations, Held-for-sale
Benefits and expenses:
Income (loss) from discontinued operations, net of tax			(361)	18
Individual Life Transaction | Discontinued Operations, Held-for-sale
Revenues:
Net investment income			485	494
Fee income			596	574
Premiums			21	21
Total net realized capital gains (losses)			20	59
Other revenue			(13)	(18)
Total revenues			1,109	1,130
Benefits and expenses:
Interest credited and other benefits to contract owners/policyholders			947	788
Operating expenses			107	58
Net amortization of Deferred policy acquisition costs and Value of business acquired			215	151
Interest expense			5	8
Total benefits and expenses			1,274	1,005
Income (loss) from discontinued operations before income taxes			(165)	125
Income tax expense (benefit)			(35)	25
Loss on sale, net of tax			(231)	0
Income (loss) from discontinued operations, net of tax			(361)	100
2018 Transaction | Discontinued Operations, Held-for-sale
Benefits and expenses:
Income (loss) from discontinued operations, net of tax			$ 0	$ (82)