Separate Accounts, Death Benefits and Other Insurance Benefit Features (Details 1) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 MAV Only [Member]	Sep. 30, 2013 With 5% rollup [Member]	Sep. 30, 2013 With Earnings Protection Benefit Rider (EPB) [Member]	Sep. 30, 2013 With 5% rollup & EPB [Member]	Sep. 30, 2013 Asset Protection Benefit ("APB") [Member]	Sep. 30, 2013 Lifetime Income Benefit ("LIB") - Death Benefit [Member]	Sep. 30, 2013 Reset [Member]	Sep. 30, 2013 Return of Premium ("ROP")/Other [Member]	Sep. 30, 2013 Guaranteed Minimum Death Benefit [Member] U.S. [Member]	Sep. 30, 2013 Guaranteed Minimum Death Benefit [Member] JAPAN [Member]	Sep. 30, 2013 Guaranteed Minimum Income Benefit [Member] JAPAN [Member]
Individual Variable and Group Annuity Account Value by GMDB/GMIB Type
Account Value (AV)	$ 26,347		$ 19,367	$ 1,579	$ 4,828	$ 573	$ 18,669	$ 878	$ 3,205	$ 20,733	$ 69,832	$ 14,161	$ 13,951
Net Amount at Risk (NAR)	4,082		3,112	271	582	117	383	11	84	108	4,668	575	448
Retained Net Amount at Risk (RNAR)	232		191	18	18	5	77	3	39	23	374	0	0
Weighted Average Attained Age of Annuitant			69 years	69 years	67 years	70 years	67 years	66 years	69 years	67 years	68 years	69 years	69 years
Less: General Account Value with U.S. GMDB	7,412
Subtotal Separate Account Liabilities with U.S. GMDB	62,420
Separate Account Liabilities without U.S. GMDB	77,444
Total Separate Account Liabilities	$ 139,864	$ 141,558