Income Tax (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 18,000,000
Income Tax Examination, Penalties Expense	0	$ 0	$ 0
Net cash paid (received) for income tax	(12,000,000)	53,000,000	(125,000,000)
Current income tax recoverable	18,000,000	0
Accrued Income Taxes	0	57,000,000
MetLife, Inc.
Net cash paid (received) for income tax	14,000,000
Income Taxes Paid		73,000,000	$ 0
Current income tax recoverable	$ 14,000,000
Accrued Income Taxes		$ 68,000,000