Vacation Ownership Notes Receivable (Details 3) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Vacation Ownership Interest [Member]
Loan loss reserve
Beginning Balance	$ 150	$ 168	$ 161	$ 94
Provision for loan losses	10	11	15	25
Write-offs of uncollectible receivables	(12)	(14)	(28)	(27)
ASU No. 2009-17 implementation				73
Ending Balance	148	165	148	165
Vacation Ownership Interest Securitized [Member]
Loan loss reserve
Beginning Balance	72	67	82
Provision for loan losses	4	13	2	11
ASU No. 2009-17 implementation				77
Transfers to and from securitized & unsecuritized, net	(8)	(11)	(16)	(19)
Ending Balance	68	69	68	69
Vacation Ownership Interest Unsecuritized [Member]
Loan loss reserve
Beginning Balance	78	101	79	94
Provision for loan losses	6	(2)	13	14
Write-offs of uncollectible receivables	(12)	(14)	(28)	(27)
ASU No. 2009-17 implementation				(4)
Transfers to and from securitized & unsecuritized, net	8	11	16	19
Ending Balance	$ 80	$ 96	$ 80	$ 96