Variable Annuity and Insurance Guarantees (Variable Annuity Guarantees with Additional Liabilities) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
GMDB [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	$ 75,002	[1]	$ 74,308	[1]
Contract value in separate accounts	70,183	[1]	69,435	[1]
Net amount at risk	182	[1]	145	[1]
Weighted average attained age	64 years	[1]	64 years	[1]
GMDB [Member] | Return of premium [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	54,378	[1]	52,616	[1]
Contract value in separate accounts	52,566	[1]	50,790	[1]
Net amount at risk	39	[1]	28	[1]
Weighted average attained age	64 years	[1]	64 years	[1]
GMDB [Member] | Five/six-year reset [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	10,465	[1]	11,220	[1]
Contract value in separate accounts	7,925	[1]	8,663	[1]
Net amount at risk	36	[1]	42	[1]
Weighted average attained age	64 years	[1]	64 years	[1]
GMDB [Member] | One-year ratchet [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	7,424	[1]	7,676	[1]
Contract value in separate accounts	7,030	[1]	7,261	[1]
Net amount at risk	64	[1]	38	[1]
Weighted average attained age	66 years	[1]	65 years	[1]
GMDB [Member] | Five-year ratchet [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	1,770	[1]	1,781	[1]
Contract value in separate accounts	1,715	[1]	1,725	[1]
Net amount at risk	3	[1]	1	[1]
Weighted average attained age	62 years	[1]	62 years	[1]
GMDB [Member] | Other [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	965	[1]	1,015	[1]
Contract value in separate accounts	947	[1]	996	[1]
Net amount at risk	40	[1]	36	[1]
Weighted average attained age	70 years	[1]	69 years	[1]
GGU death benefit [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	1,058	[1]	1,052	[1]
Contract value in separate accounts	1,006	[1]	998	[1]
Net amount at risk	121	[1]	121	[1]
Weighted average attained age	67 years	[1]	64 years	[1]
GMIB [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	359	[1]	413	[1]
Contract value in separate accounts	336	[1]	389	[1]
Net amount at risk	9	[1]	8	[1]
Weighted average attained age	67 years	[1]	66 years	[1]
GMWB [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	39,669	[1]	38,005	[1]
Contract value in separate accounts	39,542	[1]	37,851	[1]
Net amount at risk	93	[1]	78	[1]
Weighted average attained age	65 years	[1]	64 years	[1]
GMWB [Member] | GMWB standard benefit [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	3,702	[1]	3,936	[1]
Contract value in separate accounts	3,689	[1]	3,921	[1]
Net amount at risk	1	[1]	1	[1]
Weighted average attained age	68 years	[1]	67 years	[1]
GMWB [Member] | GMWB for life [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	35,967	[1]	34,069	[1]
Contract value in separate accounts	35,853	[1]	33,930	[1]
Net amount at risk	92	[1]	77	[1]
Weighted average attained age	65 years	[1]	64 years	[1]
GMAB [Member]
Variable Annuity Guarantees by Benefit Type
Total contract value	4,188	[1]	4,194	[1]
Contract value in separate accounts	4,177	[1]	4,181	[1]
Net amount at risk	$ 3	[1]	$ 2	[1]
Weighted average attained age	58 years	[1]	58 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.