Equity and other potential contributions associated with managed or joint venture properties.

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- Definition

Equity and other potential contributions associated with managed or joint venture properties expected to be funded within one year.

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- Definition

Investments associated with VIEs.

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- Definition

Loans to Owners.

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- Definition

Number of hotels in which company has variable interest entity.

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- Definition

Number of hotels sold.

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- Definition

Possible cash outlay under contracts with performance guarantees funded largely offset by management fees received under contracts.

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- Definition

Surety bond outstanding.

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Unfunded loan commitments.

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Unfunded loan commitments expected to be funded.

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Variable Interest Entities.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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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.

+ References

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2010 Hotel	Dec. 31, 2006 Hotel	Sep. 30, 2011 Contract Hotel Transaction	Dec. 31, 2010
Variable Interest Entity [Line Items]
Number of hotels in which company has variable interest entity			17
Loans to VIEs/owners			$ 535	$ 540
Variable Interest Entities (Textual) [Abstract]
Loans to Owners			13
Unfunded loan commitments			19
Unfunded loan commitments expected to be funded in total			0
Equity and other potential contributions associated with managed or joint venture properties			95
Equity and other potential contributions associated with managed or joint venture properties expected to be funded within twelve months			53
Surety bonds issued			23
Number of hotels sold	1	33
14 VIE [Member]
Variable Interest Entity [Line Items]
Investments associated with VIEs			73
Loans to VIEs/owners			9
3 VIE [Member]
Variable Interest Entity [Line Items]
Investments associated with VIEs			6	6
Possible cash outlay under contracts with performance guarantees			65
Possible cash outlay under contracts with performance guarantees funded largely offset by management fees received under contracts			62
12 VIE [Member]
Variable Interest Entity [Line Items]
Investments associated with VIEs				68
Loans to VIEs/owners				$ 9