Equity (Dividend Restrictions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2023
Parent Company
Statutory Accounting Practices [Line Items]
Payments of Dividends	$ 0	$ 550	$ 1,250
Parent Company | Scenario, Forecast
Statutory Accounting Practices [Line Items]
Permitted w/o Approval				$ 527
Brighthouse Life Insurance Co of NY
Statutory Accounting Practices [Line Items]
Payments of Dividends	$ 0	$ 0	$ 0
Brighthouse Life Insurance Co of NY | Scenario, Forecast
Statutory Accounting Practices [Line Items]
Permitted w/o Approval				$ 22