Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets
Amortized cost of fixed maturity securities available-for-sale	$ 302,873	$ 297,655
Amortized cost of fixed maturity securities valuation allowances	177	0
Contractholder-directed equity securities and fair value option securities relating to variable interest entities	11,911	13,102
Mortgage loans valuation allowances	555	353
Mortgage loans held-for-sale	0	59
Mortgage Loans on Real Estate, Commercial and Consumer, Net	82,890	80,529
Real estate and real estate joint ventures (includes $155 and $127, respectively, under the fair value option)	11,524	10,741
Other Invested Assets - Leveraged and Direct Financing Leases	2,046	2,299
Other invested assets relating to variable interest entities	24,731	19,015
Cash and cash equivalents relating to variable interest entities	24,289	16,598
Premiums, reinsurance and other receivables relating to variable interest entities	20,848	20,443
Other assets relating to variable interest entities	11,173	10,518
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	14,513	13,466
Other liabilities relating to variable interest entities	$ 23,963	$ 24,179
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	$ 4,405	$ 3,405
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,180,627,549	1,177,680,299
Common stock, shares outstanding	907,620,740	915,338,098
Treasury stock, shares	273,006,809	262,342,201
Residential mortgage loans - FVO
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 175	$ 188
Real estate and real estate joint venture [Member]
Assets
Real estate and real estate joint ventures (includes $155 and $127, respectively, under the fair value option)	155	127
Variable interest entities
Assets
Contractholder-directed equity securities and fair value option securities relating to variable interest entities	3	3
Other invested assets relating to variable interest entities	300	290
Cash and cash equivalents relating to variable interest entities	13	12
Premiums, reinsurance and other receivables relating to variable interest entities	3	4
Other assets relating to variable interest entities	2	2
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	5	5
Other liabilities relating to variable interest entities	$ 1	$ 1