Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets
Amortized Cost	$ 313,872	$ 310,884
Amortized cost of fixed maturity securities valuation allowances	355	91
Mortgage loans valuation allowances	615	634
Residential mortgage loans — FVO	79,968	79,353
Real estate and real estate joint ventures - FVO	12,379	12,216
Real Estate Held-for-sale	175	175
Other Invested Assets - Leveraged and Direct Financing Leases	2,013	1,930
Other invested assets - VIE	18,696	18,655
Net Investment in Lease, Allowance for Credit Loss	$ 37	$ 40
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, Liquidation Preference, Value	$ 3,905	$ 3,905
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,189,427,155	1,186,540,473
Common stock, shares outstanding	814,805,526	825,540,267
Treasury stock, shares	374,621,629	361,000,206
Residential mortgage loans - FVO
Assets
Residential mortgage loans — FVO	$ 119	$ 127
Real estate and real estate joint venture [Member]
Assets
Real estate and real estate joint ventures - FVO	284	240
Variable interest entities
Assets
Other invested assets - VIE	$ 356	$ 351