Variable Annuity and Insurance Guarantees (Details 2) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
GMDB and GGU
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, at the beginning of the period	$ 4	$ 5
Incurred claims	2	5
Paid claims	(3)	(6)
Balance, at the end of the period	3	4
GMIB
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, at the beginning of the period	9	9
Incurred claims	(2)	1
Paid claims		(1)
Balance, at the end of the period	7	9
Variable annuity guaranteed minimum withdrawal benefits ("GMWB")
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, at the beginning of the period	799	1,377
Incurred claims	(908)	(304)
Paid claims
Balance, at the end of the period	(109)	1,073
Variable annuity guaranteed minimum accumulation benefits ("GMAB")
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, at the beginning of the period	103	237
Incurred claims	(127)	(103)
Paid claims
Balance, at the end of the period	(24)	134
UL
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, at the beginning of the period	155	111
Incurred claims	45	39
Paid claims	(11)	(8)
Balance, at the end of the period	$ 189	$ 142