Receivables - Receivables (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Real estate secured:
Total receivables	$ 26,584		$ 32,939		$ 47,912
Total real estate secured receivables	26,584	[1],[2]	32,939	[1],[2]
Accrued finance income and other	862		952
Credit loss reserve for receivables	(3,273)		(4,607)
Total receivables, net	24,173		29,284
First Lien [Member]
Real estate secured:
Total receivables	23,568		29,301		38,235
Second Lien [Member]
Real estate secured:
Total receivables	$ 3,016		$ 3,638		$ 4,478

[1] At December 31, 2013 and December 31, 2012, nonaccrual real estate secured receivables held for investment include $1,245 million and $2,096 million, respectively, of TDR Loans, some of which may also be carried at fair value of the collateral less cost to sell

[2] At December 31, 2013 and December 31, 2012, nonaccrual real estate secured receivables held for investment include $639 million and $1,748 million, respectively, of receivables that are carried at the lower of amortized cost or fair value of the collateral less cost to sell.