Variable Annuity and Insurance Guarantees (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
GMDB
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	$ 71,532	[1]	$ 66,825	[1]
Contract value in separate accounts	66,677	[1]	62,045	[1]
Net amount at risk	193	[1],[2]	347	[1],[2]
Weighted average attained age	63 years	[1]	63 years	[1]
GMDB | Return of premium
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	50,219	[1]	45,697	[1]
Contract value in separate accounts	48,406	[1]	43,942	[1]
Net amount at risk	37	[1],[2]	61	[1],[2]
Weighted average attained age	63 years	[1]	63 years	[1]
GMDB | Five/six-year reset
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	11,096	[1]	11,233	[1]
Contract value in separate accounts	8,549	[1]	8,722	[1]
Net amount at risk	55	[1],[2]	115	[1],[2]
Weighted average attained age	64 years	[1]	63 years	[1]
GMDB | One-year ratchet
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	7,508	[1]	7,367	[1]
Contract value in separate accounts	7,088	[1]	6,933	[1]
Net amount at risk	54	[1],[2]	106	[1],[2]
Weighted average attained age	65 years	[1]	65 years	[1]
GMDB | Five-year ratchet
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	1,712	[1]	1,616	[1]
Contract value in separate accounts	1,657	[1]	1,563	[1]
Net amount at risk	2	[1],[2]	3	[1],[2]
Weighted average attained age	62 years	[1]	61 years	[1]
GMDB | Other
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	997	[1]	912	[1]
Contract value in separate accounts	977	[1]	885	[1]
Net amount at risk	45	[1],[2]	62	[1],[2]
Weighted average attained age	69 years	[1]	68 years	[1]
GGU death benefit
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	1,015	[1]	958	[1]
Contract value in separate accounts	962	[1]	907	[1]
Net amount at risk	110	[1],[2]	93	[1],[2]
Weighted average attained age	64 years	[1]	63 years	[1]
GMIB
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	410	[1]	425	[1]
Contract value in separate accounts	386	[1]	399	[1]
Net amount at risk	45	[1],[2]	72	[1],[2]
Weighted average attained age	66 years	[1]	66 years	[1]
Variable annuity guaranteed minimum withdrawal benefits ("GMWB")
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	36,163	[1]	32,486	[1]
Contract value in separate accounts	36,000	[1]	32,342	[1]
Net amount at risk	225	[1],[2]	297	[1],[2]
Weighted average attained age	65 years	[1]	64 years	[1]
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	3,873	[1]	3,898	[1]
Contract value in separate accounts	3,857	[1]	3,880	[1]
Net amount at risk	14	[1],[2]	34	[1],[2]
Weighted average attained age	67 years	[1]	66 years	[1]
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	32,290	[1]	28,588	[1]
Contract value in separate accounts	32,143	[1]	28,462	[1]
Net amount at risk	211	[1],[2]	263	[1],[2]
Weighted average attained age	65 years	[1]	64 years	[1]
Variable annuity guaranteed minimum accumulation benefits ("GMAB")
Information related to variable annuity guarantees for which the Company has established additional liabilities
Total contract value	4,026	[1]	3,773	[1]
Contract value in separate accounts	4,012	[1]	3,762	[1]
Net amount at risk	$ 2	[1],[2]	$ 5	[1],[2]
Weighted average attained age	57 years	[1]	57 years	[1]

[1] Individual variable annuity contracts may have more than one guarantee and therefore may be included in more than one benefit type. Variable annuity contracts for which the death benefit equals the account value are not shown in this table.

[2] Represents the current guaranteed benefit amount in excess of the current contract value. GMIB, GMWB and GMAB benefits are subject to waiting periods and payment periods specified in the contract.