Vacation Ownership Notes Receivable - Loan Loss Reserve (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 121	$ 136
Provisions for loan losses	(3)	7
Write-offs	(9)	(11)
Other
Ending Balance	109	132
Vacation ownership loans - securitized [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	73	80
Provisions for loan losses	(9)
Write-offs
Other	(5)	(7)
Ending Balance	59	73
Vacation ownership loans - unsecuritized [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	48	56
Provisions for loan losses	6	7
Write-offs	(9)	(11)
Other	5	7
Ending Balance	$ 50	$ 59