Receivables - Receivables Classified as Trouble Debt Restructuring Loan (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Receivables classified as Trouble Debt Restructuring Loans
Total	$ 1,244	$ 2,723	$ 2,548
First Lien [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	765	1,837	1,941
Second Lien [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	116	259	189
Personal non-credit card receivables held for sale [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	21	262	0
Personal non-credit card receivables held for investment [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	0	0	418
Receivables Held For Sale [Member] | Real Estate Secured [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	342	365	0
Receivables Held For Sale and Held for Investment [Member] | Real Estate Secured [Member] | Real estate secured [Member]
Receivables classified as Trouble Debt Restructuring Loans
Total	$ 1,223	$ 2,461	$ 2,130