Vacation Ownership Notes Receivable - Interest Income Related to VOI Notes Receivable (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Receivables [Abstract]
Vacation ownership loans - securitized	$ 17	$ 16	$ 34	$ 34
Vacation ownership loans - unsecuritized	4	4	8	8
Interest income related to VOI notes receivable, net	$ 21	$ 20	$ 42	$ 42