Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Premiums	$ 11,230	$ 17,332			$ 32,497	$ 39,505
Universal life and investment-type product policy fees	1,334	1,275			3,911	3,959
Net investment income	4,825	3,585			14,542	11,452
Other revenues	606	728			1,866	2,003
Net investment gains (losses)	(927)	(411)			(2,650)	(1,610)
Net derivative gains (losses)	(1,202)	(226)			(2,289)	(2,147)
Total revenues	15,866	22,283			47,877	53,162
Expenses
Policyholder benefits and claims	11,130	17,603			32,811	40,392
Policyholder liability remeasurement (gains) losses	(17)	136			(42)	94
Market risk benefit remeasurement (gains) losses	(796)	(965)			(1,425)	(3,162)
Interest credited to policyholder account balances	1,658	1,014			5,455	2,167
Policyholder dividends	153	158			463	551
Other expenses	3,204	2,922			9,394	8,782
Total expenses	15,332	20,868			46,656	48,824
Income (loss) before provision for income tax	534	1,415			1,221	4,338
Provision for income tax expense (benefit)	39	248			233	617
Net income (loss)	495	1,167	$ 493	$ 2,554	988	3,721
Less: Net income (loss) attributable to noncontrolling interests	6	5			17	15
Net income (loss) attributable to MetLife, Inc.	489	1,162			971	3,706
Less: Preferred stock dividends	67	64	$ 98	$ 92	165	156
Net income (loss) available to MetLife, Inc.’s common shareholders	422	1,098			806	3,550
Comprehensive income (loss)	(3,373)	(3,253)			(661)	(16,357)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	6	5			1	12
Comprehensive income (loss) attributable to MetLife, Inc.	$ (3,379)	$ (3,258)			$ (662)	$ (16,369)
Net income (loss) available to MetLife, Inc.’s common shareholders per common share:
Basic	$ 0.56	$ 1.38			$ 1.05	$ 4.38
Diluted	$ 0.56	$ 1.37			$ 1.05	$ 4.35