Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 257	$ (1,123)	$ 3,711
Other comprehensive income (loss):
Unrealized investment gains (losses), net of related offsets	(1,053)	2,313	(13,946)
Unrealized gains (losses) on derivatives	116	(284)	308
Changes in instrument-specific credit risk on market risk benefits	352	(637)	2,344
Changes in discount rates on the liability for future policy benefits	541	(376)	4,060
Foreign currency translation adjustments	(18)	18	(22)
Other comprehensive income (loss), before income tax	(62)	1,034	(7,256)
Income tax (expense) benefit related to items of other comprehensive income (loss)	13	(217)	1,524
Other comprehensive income (loss), net of income tax	(49)	817	(5,732)
Comprehensive income (loss)	208	(306)	(2,021)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	1	1	1
Comprehensive income (loss) attributable to Brighthouse Life Insurance Company	$ 207	$ (307)	$ (2,022)