MONY CLOSED BLOCK OF BUSINESS - Schedule of Closed Block Revenues and Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Premiums and other income	$ 34	$ 35
Net investment income	48	51
Net realized gains (losses)	23	0
Total revenues	105	86
Benefits and other deductions
Benefits and settlement expenses	89	78
Other operating expenses	0	0
Total benefits and other deductions	89	78
Net revenues before income taxes	16	8
Income tax expense	3	2
Net revenues	$ 13	$ 6