Vacation Ownership Notes Receivable - Loan Loss Reserve (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 103	$ 121	$ 136
Provisions for loan losses	22	11	26
Write-offs	(29)	(29)	(41)
Ending Balance	96	103	121
Vacation ownership loans - securitized [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	43	73	80
Provisions for loan losses	(2)	(10)
Other	(13)	(20)	(7)
Ending Balance	28	43	73
Vacation ownership loans - unsecuritized [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	60	48	56
Provisions for loan losses	24	21	26
Write-offs	(29)	(29)	(41)
Other	13	20	7
Ending Balance	$ 68	$ 60	$ 48