Separate Accounts, Death Benefits and Other Insurance Benefit Features (Details 1) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 MAV Only [Member]	Jun. 30, 2011 With Five Percent Rollup [Member]	Jun. 30, 2011 With Earnings Protection Benefit Rider (EPB) [Member]	Jun. 30, 2011 With Five Percent Rollup and EPB [Member]	Jun. 30, 2011 Asset Protection Benefit ("APB") [Member]	Jun. 30, 2011 Lifetime Income Benefit ("LIB") - Death Benefit [Member]	Jun. 30, 2011 Reset [Member]	Jun. 30, 2011 Return of Premium ("ROP")/Other [Member]	Jun. 30, 2011 Subtotal U.S. GMDB [Member]	Jun. 30, 2011 Japan Guaranteed Minimum Death and Living Benefit [Member]	Jun. 30, 2011 Japan GMIB [Member]
Individual Variable and Group Annuity Account Value by GMDB/GMIB Type
Account Value ("AV")	$ 32,642		$ 24,081	$ 1,648	$ 6,228	$ 685	$ 26,268	$ 1,252	$ 3,584	$ 23,557	$ 87,303	$ 30,785	$ 28,526
Net Amount at Risk ("NAR")	6,070		4,765	416	747	142	1,820	53	193	462	8,598	8,469	5,442
Retained Net Amount at Risk ("RNAR")	1,282		1,030	131	91	30	1,171	53	191	439	3,136	7,233	5,442
Weighted Average Attained Age of Annuitant			68	68	65	68	65	64	68	65	66	69	69
Less: General Account Value Subject to U.S. GMDB	7,008
Sub tota lSeparate Account Liabilities With Us Gmdb	80,295
Separate Account Liabilities without U.S. GMDB	77,190
Total Separate Account Liabilities	$ 157,485	$ 159,742