Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 290	$ 257	$ (1,123)
Other comprehensive income (loss):
Unrealized investment gains (losses), net of related offsets	2,065	(1,053)	2,313
Unrealized gains (losses) on derivatives	(241)	116	(284)
Changes in instrument-specific credit risk on market risk benefits	440	352	(637)
Changes in discount rates on the liability for future policy benefits	(330)	541	(376)
Foreign currency translation adjustments	43	(18)	18
Other comprehensive income (loss), before income tax	1,977	(62)	1,034
Income tax (expense) benefit related to items of other comprehensive income (loss)	(416)	13	(217)
Other comprehensive income (loss), net of income tax	1,561	(49)	817
Comprehensive income (loss)	1,851	208	(306)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	1	1	1
Comprehensive income (loss) attributable to Brighthouse Life Insurance Company	$ 1,850	$ 207	$ (307)