Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Amortized cost of fixed maturity securities valuation allowances	$ 184	$ 183
Amortized Cost	300,555	306,025
Mortgage loans valuation allowances	721	527
Real estate and real estate joint ventures (includes $317 and $299, respectively, under the fair value option)	13,332	13,137
Net Investment in Lease, Allowance for Credit Loss	23	26
Other Invested Assets - Leveraged and Direct Financing Leases	1,993	1,926
Other invested assets, at estimated fair value	$ 18,202	$ 20,038
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	1,191,823,651	1,189,831,471
Common stock, shares outstanding	730,821,111	779,098,414
Treasury stock, shares	461,002,540	410,733,057
Residential mortgage loans - FVO
Assets
Real estate and real estate joint ventures (includes $317 and $299, respectively, under the fair value option)	$ 317	$ 299
Variable interest entities
Assets
Other invested assets, at estimated fair value	$ 333	$ 326