Variable Annuity and Insurance Guarantees (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2011 Years	Dec. 31, 2010 Years
GMDB
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	$ 57,728	$ 61,290
Contract value in separate accounts	52,992	56,486
Net amount at risk	2,607	841
Weighted average attained age (in years)	62	62
GMDB \| Return of premium
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	37,267	37,714
Contract value in separate accounts	35,574	36,028
Net amount at risk	971	173
Weighted average attained age (in years)	62	62
GMDB \| Five/six-year reset
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	11,421	13,689
Contract value in separate accounts	8,920	11,153
Net amount at risk	614	312
Weighted average attained age (in years)	63	62
GMDB \| One-year ratchet
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	6,951	7,741
Contract value in separate accounts	6,490	7,242
Net amount at risk	842	287
Weighted average attained age (in years)	64	63
GMDB \| Five-year ratchet
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	1,392	1,466
Contract value in separate accounts	1,338	1,414
Net amount at risk	56	8
Weighted average attained age (in years)	60	60
GMDB \| Other:
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	697	680
Contract value in separate accounts	670	649
Net amount at risk	124	61
Weighted average attained age (in years)	68	67
GGU death benefit
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	882	970
Contract value in separate accounts	829	912
Net amount at risk	76	79
Weighted average attained age (in years)	63	64
GMIB
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	456	597
Contract value in separate accounts	424	561
Net amount at risk	133	76
Weighted average attained age (in years)	65	64
Variable annuity guaranteed minimum withdrawal benefits ("GMWB")
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	25,421	24,715
Contract value in separate accounts	25,294	24,576
Net amount at risk	2,238	235
Weighted average attained age (in years)	64	63
Variable annuity guaranteed minimum withdrawal benefits ("GMWB") \| GMWB
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	3,743	4,341
Contract value in separate accounts	3,722	4,317
Net amount at risk	447	106
Weighted average attained age (in years)	65	64
Variable annuity guaranteed minimum withdrawal benefits ("GMWB") \| GMWB for life
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	21,678	20,374
Contract value in separate accounts	21,572	20,259
Net amount at risk	1,791	129
Weighted average attained age (in years)	64	63
Variable annuity guaranteed minimum accumulation benefits ("GMAB")
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	3,308	3,540
Contract value in separate accounts	3,302	3,523
Net amount at risk	$ 161	$ 22
Weighted average attained age (in years)	56	56
The number of guaranteed benefits included in most of the variable annuity contracts issued by the Company	One or more

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Weighted average attained age of all policyholders or contract holders in the specified guarantee type and subset of guarantee class.

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