Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Assets
Amortized cost of fixed maturity securities available-for-sale	$ 338,030	$ 330,354
Fixed maturity securities relating to variable interest entities	364,084	350,889
Cost of equity securities available-for-sale	2,983	2,744
Fair value option and trading securities relating to variable interest entities	14,762	13,923
Mortgage loans valuation allowances	356	344
Mortgage Loans on Real Estate	77,572	74,545
Real estate held-for-sale	44	59
Other limited partnership interests relating to variable interest entities	6,874	6,778
Short-term Investments	7,177	7,810
Other invested assets relating to variable interest entities	19,596	23,185
Cash and cash equivalents relating to variable interest entities	17,319	17,877
Accrued investment income relating to variable interest entities	3,970	3,988
Premiums, reinsurance and other receivables relating to variable interest entities	26,487	26,081
Other assets relating to variable interest entities	8,073	7,767
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	$ 19,508	$ 16,502
MetLife, Inc.’s stockholders’ equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	2,100	2,100
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,166,331,934	1,164,029,985
Common stock, shares outstanding	1,063,465,987	1,095,519,005
Treasury stock, shares	102,865,947	68,510,980
Residential mortgage loans — FVO
Assets
Mortgage Loans on Real Estate	$ 615	$ 566
Variable interest entities
Assets
Fixed maturity securities relating to variable interest entities	0	3,422
Fair value option and trading securities relating to variable interest entities	7	8
Mortgage Loans on Real Estate	123	136
Other limited partnership interests relating to variable interest entities	13	14
Short-term Investments	0	0
Other invested assets relating to variable interest entities	31	31
Cash and cash equivalents relating to variable interest entities	1	1
Accrued investment income relating to variable interest entities	1	1
Premiums, reinsurance and other receivables relating to variable interest entities	6	2
Other assets relating to variable interest entities	3	3
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	$ 28	$ 35