Commitments, Guarantees and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Aggregate minimum rentals under noncancelable operating leases
2014	$ 84
2015	77
2016	64
2017	61
2018	51
Thereafter	88
Total	425	[1]
Operating lease expense	85		84	91
Funding Commitments
Commercial mortgage loan commitments	71		76
Consumer mortgage loan commitments	542		627
Consumer lines of credit	4		5
Affordable housing Partnerships	137		144
Total funding commitments	754		852
Minimum interest rate guarantees, high end of the range (as a percent)	5.00%
Liability related to guaranty fund assessments	14		26
Premium tax asset	11		19
Minimum [Member]
Funding Commitments
Damages sought by plaintiffs	$ 20

[1] Minimum payments have not been reduced by minimum sublease rentals due in the future under noncancelable subleases.