Loans (Details Textual) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2011
Loans (Additional Textual) [Abstract]
Residential mortgage loans with high LTV and no mortgage insurance	$ 1,000,000,000			$ 1,000,000,000			$ 1,100,000,000
Loans (Textual) [Abstract]
Net deferred origination costs	36,000,000			36,000,000			48,000,000
Net unamortized premium on loans	26,000,000			26,000,000			28,000,000
Amortized net premiums on loans	9,000,000	15,000,000		18,000,000	30,000,000
Nonaccrual Loans	1,645,000,000			1,645,000,000			1,828,000,000
Current Interest income of nonaccrual loans	26,000,000	32,000,000		55,000,000	59,000,000
Current Interest income (expense) and other income included in finance for loans	2,000,000	8,000,000		1,000,000	9,000,000
Other loans included in impaired loans apart from TDR loans	434,000,000			434,000,000			614,000,000
Non Accrual loans included in TDR loan	377,000,000			377,000,000			331,000,000
Residential mortgage loan delinquency carried at lower of amortized cost or fair value less cost to sell	938,000,000			938,000,000			803,000,000
Amount of ARM loans to experience first interest rate reset			104,000,000			350,000,000
Closed end first lien loans held for sale	900,000,000			900,000,000			2,000,000,000
Sub-prime residential mortgage [Member]
Loans (Additional Textual) [Abstract]
Residential mortgage loans with high LTV and no mortgage insurance	61,000,000			61,000,000			68,000,000
Sub-prime residential mortgage loans held for sale excluded from Arm Loan	$ 26,000,000			$ 26,000,000			$ 28,000,000