Receivables Held for Sale - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended															1 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 01, 2013 employee	Dec. 31, 2011	Dec. 31, 2013 Other Income [Member]	Dec. 31, 2012 Other Income [Member]	Dec. 31, 2013 Fair Value [Member] Other Income [Member]	Dec. 31, 2012 Fair Value [Member] Other Income [Member]	Dec. 31, 2012 Fair Value [Member] Provision and Other Income [Member]	Dec. 31, 2013 Real Estate Owned [Member]	Dec. 31, 2012 Real Estate Owned [Member]	Dec. 31, 2013 Real Estate Owned [Member] Other Income [Member]	Dec. 31, 2012 Real Estate Owned [Member] Other Income [Member]	Dec. 31, 2013 Short Sales [Member]	Dec. 31, 2012 Short Sales [Member]	Dec. 31, 2013 Short Sales [Member] Other Income [Member]	Dec. 31, 2012 Short Sales [Member] Other Income [Member]	Dec. 31, 2013 First Mortgage [Member]	Jun. 30, 2012 First Mortgage [Member]	Dec. 31, 2013 First Mortgage [Member] Third-Party Investor [Member]	Dec. 31, 2013 First Mortgage [Member] Third-Party Investor [Member]	Apr. 02, 2013 Personal non-credit card [Member]	Jun. 30, 2013 Personal non-credit card [Member]	Mar. 31, 2013 Personal non-credit card [Member]	Dec. 31, 2013 Personal non-credit card [Member]	Dec. 31, 2012 Personal non-credit card [Member]	Dec. 31, 2013 Real Estate Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid principal balance																			$ 8,100,000,000
Net realizable value of assets																			4,600,000,000
Aggregate unpaid balance																		3,612,000,000		4,561,000,000	5,685,000,000			3,760,000,000
Aggregate carrying balance																		2,506,000,000		2,493,000,000	3,127,000,000
Proceeds from sale of loans held-for-sale																					3,131,000,000	2,964,000,000
Gain (loss) on sales of loans																					(89,000,000)		(11,000,000)
Initial lower of amortized cost or fair value adjustment					212,000,000	1,547,000,000	212,000,000	1,547,000,000	1,659,000,000			0	0			0	0
Period of receivables sold in multiple transactions	15 months
Real estate secured receivables held for sale through short sale or transfer to REO	(711,000,000)	(264,000,000)								529,000,000	168,000,000			182,000,000	96,000,000										0	0
Lower of amortized cost or fair value adjustment	748,000,000	18,000,000			(536,000,000)	1,641,000,000	(474,000,000)	1,711,000,000		(40,000,000)	(50,000,000)	(40,000,000)	(50,000,000)	(22,000,000)	(20,000,000)	(22,000,000)	(20,000,000)							(82,000,000)	(82,000,000)	21,000,000	(768,000,000)
Receivable sales																								2,947,000,000
Number of employees transferred to new department			200
Servicing Fees																									28,000,000
Loans and Leases Receivable Held for Sale Valuation Allowance	$ 329,000,000	$ 1,452,000,000		$ 0