Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fixed maturities, available-for-sale, at amortized cost	$ 60,455	$ 60,641
Fixed maturities, at fair value using the fair value option, variable interest entity assets	155	161
Equity securities, trading, at cost	10	14,504
Equity securities, available-for-sale, at cost	745	850
Mortgage loans loss, net of allowances	17	67
Other liabilities, variable interest entity liabilities	20	33
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock authorized	50,000,000	50,000,000
Convertible Preferred Stock, Shares Issued	0	0
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,500,000,000	1,500,000,000
Common stock, shares issued	490,923,222	490,923,222
Treasury stock, shares	39,327,213	37,632,782
Equity Securities [Member]
Short-term investment, variable interest entity assets	0	0
Commercial [Member]
Mortgage loans loss, net of allowances	$ 17	$ 67