Financing Receivables (Details) (USD $)	3 Months Ended
	Mar. 31, 2014 loan	Mar. 31, 2013 loan	Dec. 31, 2013
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modifications, Number of Contracts	5	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 9,000,000
Loans and Leases Receivable, Impaired, Commitment to Lend	0
Rollforward of the allowance for loan losses
Allowance for loan losses, balance at the beginning of the period	37,000,000	44,000,000
Charge-offs	(3,000,000)	(1,000,000)
Allowance for loan losses, balance at the end of the period	34,000,000	43,000,000
Individually evaluated for impairment	7,000,000	8,000,000
Collectively evaluated for impairment	27,000,000	35,000,000
Individually evaluated for impairment	43,000,000		58,000,000
Collectively evaluated for impairment	3,914,000,000		3,883,000,000
Financing receivables	3,957,000,000		3,941,000,000
Financing receivables ending balance: Individually evaluated for impairment with no related allowance for loan losses	18,000,000		21,000,000
Nonperforming loans	10,000,000		22,000,000
Commercial Mortgage Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modifications, Number of Contracts	2	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	8,000,000	0
Rollforward of the allowance for loan losses
Allowance for loan losses, balance at the beginning of the period	26,000,000	29,000,000
Charge-offs	(1,000,000)
Allowance for loan losses, balance at the end of the period	25,000,000	29,000,000
Individually evaluated for impairment	6,000,000	7,000,000
Collectively evaluated for impairment	19,000,000	22,000,000
Individually evaluated for impairment	32,000,000		42,000,000
Collectively evaluated for impairment	2,663,000,000		2,640,000,000
Financing receivables	2,695,000,000		2,682,000,000
Syndicated loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modifications, Number of Contracts	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,000,000	0
Rollforward of the allowance for loan losses
Allowance for loan losses, balance at the beginning of the period	6,000,000	7,000,000
Charge-offs	(2,000,000)
Allowance for loan losses, balance at the end of the period	4,000,000	7,000,000
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	4,000,000	7,000,000
Individually evaluated for impairment	4,000,000		9,000,000
Collectively evaluated for impairment	418,000,000		370,000,000
Financing receivables	422,000,000		379,000,000
Loans purchased	65,000,000	22,000,000
Loans sold	4,000,000	1,000,000
Consumer Loans
Financing Receivable Allowance for Credit Losses
Financing Receivable, Modifications, Number of Contracts	2	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Rollforward of the allowance for loan losses
Allowance for loan losses, balance at the beginning of the period	5,000,000	8,000,000
Charge-offs		(1,000,000)
Allowance for loan losses, balance at the end of the period	5,000,000	7,000,000
Individually evaluated for impairment	1,000,000	1,000,000
Collectively evaluated for impairment	4,000,000	6,000,000
Individually evaluated for impairment	7,000,000		7,000,000
Collectively evaluated for impairment	833,000,000		873,000,000
Financing receivables	840,000,000		880,000,000
Percentage of residential mortgage loans and credit cards and other consumer loans	6.00%		5.00%
Percentage of residential mortgage loans with Loan-To-Value ratios	2.00%		2.00%
FICO score	640		640
Specified LTV ratios	90.00%		90.00%
Percentage of total loan portfolio represented by state of California	37.00%		38.00%
Nonperforming syndicated loans
Rollforward of the allowance for loan losses
Nonperforming loans	$ 1,000,000		$ 4,000,000