Vacation Ownership Notes Receivable - Loan Loss Reserve (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 92	$ 96
Provisions for loan losses	8	3
Write-offs	(6)	(6)
Ending Balance	94	93
Vacation ownership loans - securitized [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	15	28
Provisions for loan losses		(1)
Other	(2)	(3)
Ending Balance	13	24
Vacation ownership loans - unsecuritized [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	77	68
Provisions for loan losses	8	4
Write-offs	(6)	(6)
Other	2	3
Ending Balance	$ 81	$ 69