Vacation Ownership Notes Receivable (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Notes receivable (net of reserves) related to vacation ownership loans
Net notes receivable	$ 618	$ 619
Less: current portion
Notes Receivable Noncurrent	535	540
Vacation Ownership Interest Securitized [Member]
Notes receivable (net of reserves) related to vacation ownership loans
Net notes receivable	379	467
Less: current portion
Notes Receivable Noncurrent	(54)	(59)
Vacation Ownership Interest Unsecuritized [Member]
Notes receivable (net of reserves) related to vacation ownership loans
Net notes receivable	239	152
Less: current portion
Notes Receivable Noncurrent	$ (29)	$ (20)

An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_NotesAndLoansReceivableNetNoncurrent
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant