Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fixed maturities, available-for-sale, at amortized cost	$ 28,838	$ 45,753
Fixed maturities, available-for-sale, variable interest entity assets	33	89
Fixed maturities, at fair value using the fair value option, variable interest entity assets	118	132
Equity securities, trading, at cost	10	1,614
Equity securities, available-for-sale, at cost	388	408
Mortgage loans loss, net of allowances	12	14
Limited partnerships and other alternative investments, variable interest entity assets	4	6
Short-term investment, variable interest entity assets	8	0
Other liabilities, variable interest entity liabilities	58	111
Common stock, par value	$ 5,690	$ 5,690
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	1,000	1,000
Common stock: shares outstanding	1,000	1,000
Equity Securities [Member]
Short-term investment, variable interest entity assets	$ 1	$ 0