Accounts Receivable and Finance Receivables (Details 3) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012 item	Dec. 31, 2011
Finance receivables held for investment based on the internally assigned credit quality
Number of loan categories based on key credit quality indicators for individual loan	3
Total finance receivables held for investment	$ 2,128	$ 2,477
Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,717	1,875
Finance receivables held for investment based on the internally assigned credit quality, percent	80.70%	75.70%
Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	159	281
Finance receivables held for investment based on the internally assigned credit quality, percent	7.50%	11.30%
Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	252	321
Finance receivables held for investment based on the internally assigned credit quality, percent	11.80%	13.00%
Nonaccrual | Maximum
Finance receivables held for investment based on the internally assigned credit quality
Number of months of contractual delinquence to classify accounts as nonaccrual unless such collection is not doubtful	3 months
Captive
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,753	1,945
Captive | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	1,491	1,558
Captive | Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	150	251
Captive | Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	112	136
Timeshare
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	203	281
Timeshare | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	73	89
Timeshare | Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	4	25
Timeshare | Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	126	167
Structured Capital
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	149	208
Structured Capital | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	144	203
Structured Capital | Watchlist
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	5	5
Other Liquidating
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	23	43
Other Liquidating | Performing
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	9	25
Other Liquidating | Nonaccrual
Finance receivables held for investment based on the internally assigned credit quality
Total finance receivables held for investment	$ 14	$ 18