Income Tax (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Examination, Penalties Expense	$ 0	$ 0	$ 0
Percent of cash savings included in tax receivable agreement	86.00%
Taxes Payable	$ 328,000,000	328,000,000
Net cash paid (received) for income tax	7,000,000	44,000,000	103,000,000
Current income tax recoverable	27,000,000	38,000,000
MetLife, Inc.
Net cash paid (received) for income tax	0	(7,000,000)
Income tax paid by Brighthouse Financial, Inc.			$ 81,000,000
Current income tax recoverable	$ 21,000,000	$ 19,000,000