Receivables Held for Sale - Summary of Activity in Receivables Held for Sale (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Receivables Held for Sale, Activity [Roll Forward]
Receivables held for sale at beginning of period		$ 860	[1],[2]	$ 2,047	[1]	$ 6,203
Transfer of real estate secured receivables into held for sale at the lower of amortized cost or fair value	[3],[4]	10,327		909		2,130
Lower of amortized cost or fair value adjustment on receivables held for sale		(130)		314		748
Carrying value of real estate secured receivables held for sale settled through short sale or transfer to REO		(148)		(243)		(711)
Change in real estate secured receivable balance, including collections		(649)		30		(249)
Transfer of real estate secured receivables into held for investment at the lower of amortized cost or fair value	[5]			(45)
Receivables held for sale at end of period	[1]	8,265	[2]	860	[2]	2,047
Mortgage Loans on Real Estate [Member]
Receivables Held for Sale, Activity [Roll Forward]
Receivables held for sale at beginning of period		860	[1]	2,047	[1]	3,022
Transfer of real estate secured receivables into held for sale at the lower of amortized cost or fair value	[3],[4]	10,327		909		2,130
Real estate secured receivable sales		(1,995)		(2,152)
Lower of amortized cost or fair value adjustment on receivables held for sale		(130)		314		830
Carrying value of real estate secured receivables held for sale settled through short sale or transfer to REO		(148)		(243)		(711)
Change in real estate secured receivable balance, including collections		(649)		30		(97)
Transfer of real estate secured receivables into held for investment at the lower of amortized cost or fair value	[5]			(45)
Receivables held for sale at end of period	[1]	8,265		860		2,047
Consumer Loan Excluding Credit Card [Member]
Receivables Held for Sale, Activity [Roll Forward]
Receivables held for sale at beginning of period		0	[1]	0	[1]	3,181
Transfer of real estate secured receivables into held for sale at the lower of amortized cost or fair value	[3],[4]	0		0		0
Real estate secured receivable sales		0				(2,947)
Lower of amortized cost or fair value adjustment on receivables held for sale		0		0		(82)
Carrying value of real estate secured receivables held for sale settled through short sale or transfer to REO		0		0		0
Change in real estate secured receivable balance, including collections		0		0		(152)
Receivables held for sale at end of period	[1]	0		0		0
First Mortgage [Member]
Receivables Held for Sale, Activity [Roll Forward]
Receivables held for sale at beginning of period		860
Real estate secured receivable sales		(1,995)		(2,152)		(3,127)
Receivables held for sale at end of period		$ 8,110		$ 860
First Mortgage [Member] | Mortgage Loans on Real Estate [Member]
Receivables Held for Sale, Activity [Roll Forward]
Real estate secured receivable sales						$ (3,127)

[1] Real estate secured receivables held for sale in the table above are presented net of the valuation allowance.

[2] The balances included in this table reflect the principal amount outstanding on the loan net of any charge-off recorded in accordance with our existing charge-off policies but exclude any basis adjustments to the loan such as unearned income, unamortized deferred fees and costs on originated loans, purchase accounting fair value adjustments and premiums or discounts on purchased loans. Additionally, the balances in this table related to receivables which have been classified as held for sale have been reduced by the lower of amortized cost or fair value adjustment recorded as well as the credit loss reserves associated with these receivables prior to the transfer.

[3] Amount includes any accrued interest associated with the receivable.

[4] The initial lower of amortized cost or fair value adjustment on receivables transferred into held for sale during 2015 totaled $234 million compared with $113 million during 2014 and $212 million during 2013.

[5] During the first quarter of 2014, we identified a small number of receivables held for sale which did not meet our criteria to be classified as held for sale. As a result we transferred these receivables to held for investment at the lower of amortized cost or fair value.