Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 3,403	$ 4,444	$ 1,602
Other comprehensive income (loss):
Change in Gross Unrealized Temporary Loss	4,661	(6,524)	10,325
Deferred gains (losses) on derivatives	(2,461)	211	(1,811)
Future policy benefits discount rate remeasurement gains (losses)	2,021	4,997	(4,361)
Market risk benefit instrument-specific credit risk remeasurement gains (losses)	(31)	(124)	(102)
Foreign currency translation adjustments	952	(858)	296
Defined benefit plans adjustment	(63)	(5)	88
Other comprehensive income (loss), before income tax	5,205	(2,293)	4,259
Income tax (expense) benefit related to items of other comprehensive income (loss)	(1,027)	353	(898)
Other comprehensive income (loss), net of income tax	4,178	(1,940)	3,361
Comprehensive income (loss)	7,581	2,504	4,963
Less: Comprehensive income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests, net of income tax	26	22	6
Comprehensive income (loss) attributable to MetLife, Inc.	$ 7,555	$ 2,482	$ 4,957