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(Debt, Schedule of Debt Covenants) (Details) (USD $) In Billions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Line Of Credit Facility Covenant Actual Results [Member] |  |
Line of Credit Facility [Line Items] |  |
Line Of Credit Facility Maximum Leverage Ratio Covenant | 0.447 | [1]
Line Of Credit Facility Minimum Fixed Charge Coverage Ratio Covenant | 2.07x | [2]
Line Of Credit Facility Minimum Tangible Net Worth Covenant | $ 2.0 | [3]
Line Of Credit Facility Covenant [Member] |  |
Line of Credit Facility [Line Items] |  |
Line Of Credit Facility Maximum Leverage Ratio Covenant | 0.60 | [1]
Line Of Credit Facility Minimum Fixed Charge Coverage Ratio Covenant | 1.50x | [2]
Line Of Credit Facility Minimum Tangible Net Worth Covenant | $ 1.8 | [3]
[1] | (1)Leverage ratio is total indebtedness, as defined in the credit agreement and which includes our commitment on the Times Square development hotel, divided by total asset value, which is defined in the credit agreement as a) total cash and cash equivalents plus b) the value of our owned hotels based on (i) until March 31, 2012, appraised values and (ii) after March 31, 2012, hotel net operating income divided by an 8.5% capitalization rate, and (c) the book value of the Allerton l
[2] | (2)Fixed charge coverage ratio is Adjusted EBITDA, which is defined in the credit agreement as EBITDA less FF&E reserves, for the most recently ending 12 fiscal months, to fixed charges, which is defined in the credit agreement as interest expense, all regularly scheduled principal payments and payments on capitalized lease obligations, for the same most recently ending 12 fiscal month per
[3] | Tangible net worth, as defined in the credit agreement, is (i) total gross book value of all assets, exclusive of depreciation and amortization, less intangible assets, total indebtedness, and all other liabilities, plus (ii) 85% of net proceeds from future equity issuances.

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