Receivables Held for Investment, net - Nonperforming Consumer Receivable Portfolio (Detail) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Real estate secured receivables held for investment	[1],[2],[3]	$ 0	$ 9,156
Real estate secured receivables held for sale	[3],[4]	10,148	8,265
Total	[3]	10,148	17,421
Nonaccrual loans carried at lower of amortized cost of fair value less cost to sell but less than 90 days delinquent		424	501
Accruing Loans [Member]
Financing Receivable, Impaired [Line Items]
Real estate secured receivables held for investment	[1],[2],[3]	0	8,873
Real estate secured receivables held for sale	[3]	9,743	7,879
Total	[3]	9,743	16,752
Nonaccrual Loans [Member]
Financing Receivable, Impaired [Line Items]
Real estate secured receivables held for investment	[1],[2],[3],[5]	0	283
Real estate secured receivables held for sale	[3],[5]	405	386
Total	[3],[5]	$ 405	669
Nonperforming receivables held for investment (TDR)			178
Nonaccrual Loans [Member] | Real estate secured [Member]
Financing Receivable, Impaired [Line Items]
Nonperforming receivables held for investment			$ 187

[1] At December 31, 2015, nonperforming real estate secured receivables held for investment include $178 million of TDR Loans, some of which may also be carried at fair value of the collateral less cost to sell

[2] At December 31, 2015, nonperforming real estate secured receivables held for investment include $187 million of receivables that are carried at the lower of amortized cost or fair value of the collateral less cost to sell.

[3] The receivable 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 receivables. 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.

[4] At September 30, 2016, receivables held for sale includes $790 million of closed-end real estate secured receivables which are part of a collateralized funding transaction. These receivables will be sold when they are contractually released as collateral under the public trust and become available for sale. See Note 11, “Variable Interest Entities,” for further discussion of our collateralized funding transactions.

[5] Nonaccrual receivables do not include receivables totaling $424 million and $501 million at September 30, 2016 and December 31, 2015, respectively, which are less than 90 days contractually delinquent and not accruing interest.