Fair Value of Financial Instruments (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Assets :
Restricted cash, Carrying amount	$ 2	$ 10
Vacation ownership notes receivable, Carrying amount	210	132
Securitized vacation ownership notes receivable, Carrying amount	325	408
Other notes receivable, Carrying amount	18	19
Total financial assets, Carrying amount	555	569
Restricted Cash, Fair value	2	10
Vacation ownership notes receivable Fair value	248	153
Securitized vacation ownership notes receivable, Fair value	393	492
Other notes receivable, Fair value	18	19
Total	661	674
Liabilities:
Long-term debt, Carrying amount	2,187	2,848
Long-term securitized vacation ownership debt	283	367
Total financial liabilities, Carrying amount	2,470	3,215
Long-term debt, Fair value	2,348	3,120
Long-term securitized vacation ownership debt, Fair value	295	373
Total financial liabilities, Fair value	2,643	3,493
Off-Balance sheet:
Letters of credit, Carrying amount	0	0
Surety bonds, Carrying amount	0	0
Total off-balance sheet, Carrying amount	0	0
Letters of credit, Fair value	161	159
Surety bonds, Fair value	23	23
Total off-balance sheet, Fair value	$ 184	$ 182

Fair Value Disclosure Off Balance Sheet Surety Bonds.

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Financial assets carrying amount.

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Financial liabilities carrying amount.

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Letters of credit.

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Long-term securitized debt, fair value.

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Long term securitized vacation ownership debt, net.

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Off-Balance sheet.

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Off balance sheet risks carrying amount.

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Other Notes Receivable Net Noncurrent.

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Restricted cash, Fair value disclosure.

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Noncurrent securitized notes receivable including capitalized debt costs (net of amortization).

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Securitized vacation ownership notes receivable.

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Surety bonds.

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Unsecuritized vacation ownership notes receivable less current amount.

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Voi notes receivable fair value disclosure.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of Loans Payable at the balance sheet date.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money at a future date(s).

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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