Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Assets
Amortized cost of fixed maturity securities available-for-sale	$ 57,134	$ 57,289
Cost of equity securities available-for-sale	234	280
Mortgage loans valuation allowances	44	40
Short-term Investments	1,096	1,272
Cash and Cash Equivalents, at Carrying Value	1,388	5,057
Mortgage loans, at estimated fair value, relating to variable interest entities	10,328	9,290
Real estate held-for-sale
Accrued investment income relating to variable interest entities	613	668
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	50	1,904
Other liabilities relating to variable interest entities	$ 4,916	$ 5,445
Equity
Common stock, par value	$ 25,000	$ 25,000
Common stock, shares authorized	4,000	4,000
Common stock, shares issued	3,000	3,000
Common stock, shares outstanding	3,000	3,000
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Short-term Investments	$ 0	$ 344
Cash and Cash Equivalents, at Carrying Value	0	3,078
Mortgage loans, at estimated fair value, relating to variable interest entities	119	136
Accrued investment income relating to variable interest entities	1	1
Liabilities
Long-term debt, at estimated fair value, relating to variable interest entities	14	23
Other liabilities relating to variable interest entities	$ 0	$ 1