Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues
Premiums	$ 275	$ 320
Net investment income	361	393
Net investment gains (losses)	(32)	6
Net derivative gains (losses)	3	1
Total revenues	607	720
Expenses
Policyholder benefits and claims	483	546
Policyholder dividends	133	178
Other expenses	23	25
Total expenses	639	749
Revenues, net of expenses before provision for income tax expense (benefit)	(32)	(29)
Provision for income tax expense (benefit)	(7)	(6)
Revenues, net of expenses and provision for income tax expense (benefit)	$ (25)	$ (23)