Equity (Statutory Net Income/Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Parent Company
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount	$ (2,330)	$ (787)	$ (3,131)
Brighthouse Life Insurance Co of NY
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount	$ 110	$ (120)	$ 539