Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Premiums	$ 38,992	$ 37,202	$ 36,403
Universal life and investment-type product policy fees	5,510	5,483	5,570
Net investment income	17,363	16,790	16,205
Other revenues	1,341	1,685	1,927
Net investment gains (losses):
Other-than-temporary impairments on fixed maturity securities	(11)	(96)	(61)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income (loss)	1	(11)	2
Other net investment gains (losses)	(298)	424	668
Total net investment gains (losses)	(308)	317	609
Net derivative gains (losses)	(590)	(690)	629
Total revenues	62,308	60,787	61,343
Expenses
Policyholder benefits and claims	38,313	36,358	35,144
Interest credited to policyholder account balances	5,607	5,176	4,415
Policyholder dividends	1,231	1,223	1,356
Other expenses	13,621	13,749	14,777
Total expenses	58,772	56,506	55,692
Income (loss) from continuing operations before provision for income tax	3,536	4,281	5,651
Provision for income tax expense (benefit)	(1,470)	693	1,590
Income (loss) from continuing operations, net of income tax	5,006	3,588	4,061
Income (loss) from discontinued operations, net of income tax	(986)	(2,734)	1,324
Net income (loss)	4,020	854	5,385
Less: Net income (loss) attributable to noncontrolling interests	10	4	12
Net income (loss) attributable to MetLife, Inc.	4,010	850	5,373
Less: Preferred stock dividends	103	103	116
Preferred stock repurchase premium	0	0	42
Net income (loss) available to MetLife, Inc.’s common shareholders	$ 3,907	$ 747	$ 5,215
Income (loss) from continuing operations, net of income tax, available to MetLife, Inc.’s common shareholders per common share:
Basic	$ 4.57	$ 3.16	$ 3.48
Diluted	4.53	3.13	3.44
Net income (loss) available to MetLife, Inc.’s common shareholders per common share:
Basic	3.65	0.68	4.67
Diluted	3.62	0.67	4.62
Cash dividends declared per common share	$ 1.600	$ 1.575	$ 1.475