Vacation Ownership Notes Receivable (Details 1) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest income related to VOI notes receivable
Vacation ownership Loans - securitized	$ 15	$ 16	$ 32	$ 32
Vacation ownership Loans - unsecuritized	6	7	11	13
Interest income related to VOI notes receivable, net	$ 21	$ 23	$ 43	$ 45