Debt (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended													1 Months Ended									1 Months Ended						9 Months Ended						1 Months Ended
	Sep. 30, 2012 Hotels	Sep. 30, 2012 Hotels	Sep. 30, 2011	Sep. 30, 2012 Hotels	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Line of Credit [Member]	Sep. 30, 2012 Line of Credit [Member] Libor Plus Four Point Five Percent Due August 2014 [Member] Hotels		Dec. 31, 2011 Line of Credit [Member] Libor Plus Four Point Five Percent Due August 2014 [Member]	Sep. 30, 2012 Mortgages [Member] Four Point Nine Four Percent Due October 2022 [Member] Hotels	Dec. 31, 2011 Mortgages [Member] Four Point Nine Four Percent Due October 2022 [Member]	Sep. 30, 2012 Mortgages [Member] Libor Plus Five Point One Zero Percent Due April 2015 [Member] Hotels		Dec. 31, 2011 Mortgages [Member] Libor Plus Five Point One Zero Percent Due April 2015 [Member]	Sep. 30, 2012 Mortgages [Member] Four Point Nine Five Percent Due October 2022 [Member] Loan	Sep. 30, 2012 Mortgages [Member] Four Point Nine Five Percent Due October 2022 [Member] Hotels		Dec. 31, 2011 Mortgages [Member] Four Point Nine Five Percent Due October 2022 [Member]	Sep. 30, 2012 Mortgages [Member] Libor Plus Two Point Two Zero Percent Due May 2013 [Member] Hotels	Sep. 30, 2012 Mortgages [Member] Nine Point Zero Two Percent Due April 2014 [Member]	Sep. 30, 2012 Mortgages [Member] Six Point Six Six Percent Due June Through August 2014 [Member] Hotels		Dec. 31, 2011 Mortgages [Member] Six Point Six Six Percent Due June Through August 2014 [Member]	Sep. 30, 2012 Mortgages [Member] Five Point Eight One Percent Due July 2016 [Member] Hotels	Dec. 31, 2011 Mortgages [Member] Five Point Eight One Percent Due July 2016 [Member]	Sep. 30, 2012 Senior Notes [Member] Six Point Seven Five Percent Due June 2019 [Member] Hotels	Dec. 31, 2011 Senior Notes [Member] Six Point Seven Five Percent Due June 2019 [Member]	Jan. 31, 2012 Senior Notes [Member] Ten Point Zero Zero Percent Due October 2014 [Member]	Jun. 30, 2011 Senior Notes [Member] Ten Point Zero Zero Percent Due October 2014 [Member]	Sep. 30, 2012 Senior Notes [Member] Ten Point Zero Zero Percent Due October 2014 [Member] Hotels		Dec. 31, 2011 Senior Notes [Member] Ten Point Zero Zero Percent Due October 2014 [Member]		Sep. 30, 2012 Other Debt [Member] Hotels		Sep. 30, 2012 Other Debt [Member] Libor Plus One Point Five Zero Percent Due December 2012 [Member]		Dec. 31, 2011 Other Debt [Member] Libor Plus One Point Five Zero Percent Due December 2012 [Member]		Aug. 31, 2012 Secured Debt [Member]	May 31, 2012 Secured Debt [Member]	Sep. 30, 2012 Minimum [Member] Mortgages [Member] Libor Plus Five Point One Zero Percent Due April 2015 [Member]		Oct. 31, 2012 Subsequent Event [Member] Knickerbocker [Member] Mortgages [Member] Libor Plus 125 Basis Points Due April 2016 [Member]	Oct. 31, 2012 Subsequent Event [Member] Knickerbocker [Member] Mortgages [Member] Libor Plus 400 Basis Points Due April 2016 [Member]	Sep. 30, 2012 Pool of Hotels Securing Repaid Loan [Member] Mortgages [Member] Nine Point Zero Two Percent Due April 2014 [Member] Hotels	Sep. 30, 2012 Hotels Mortgaged to Support New Loans [Member] Mortgages [Member] Nine Point Zero Two Percent Due April 2014 [Member] Hotels	Sep. 30, 2012 Hotels Unencumbered [Member] Nine Point Zero Two Percent Due April 2014 [Member] Hotels	Sep. 30, 2012 Hotels Unencumbered [Member] Mortgages [Member] Libor Plus Two Point Two Zero Percent Due May 2013 [Member] Hotels	Sep. 30, 2012 Non-Strategic [Member] Mortgages [Member] Libor Plus Two Point Two Zero Percent Due May 2013 [Member] Hotels	Sep. 30, 2012 Non-Strategic [Member] Mortgages [Member] Nine Point Zero Two Percent Due April 2014 [Member] Hotels	Sep. 30, 2012 Used to Secure New Loan [Member] Mortgages [Member] Libor Plus Two Point Two Zero Percent Due May 2013 [Member] Hotels
Debt Instrument [Line Items]
Number of encumbered hotels (in hotels)	45	45		45				10	[1]		1		7	[2]		5	4	[3]				5	[3]		1		6				11	[4]			0	[5]
Number of unencumbered hotels (in hotels)																																																			2		1
Interest rate											4.94%					4.95%	4.95%				9.02%	6.66%			5.81%		6.75%				10.00%	[4]
Variable rate basis																																			LIBOR
Variable rate basis spread								4.50%					5.10%																								1.50%								1.25%	4.00%
Long-term Debt	$ 1,598,094,000	$ 1,598,094,000		$ 1,598,094,000		$ 1,596,466,000		$ 117,000,000	[1]	$ 0	$ 32,250,000	$ 0	$ 186,529,000		$ 202,982,000		$ 128,500,000		$ 0			$ 65,935,000		$ 67,375,000	$ 10,521,000	$ 10,876,000	$ 525,000,000	$ 525,000,000			$ 467,499,000	[4]	$ 459,931,000	[4]			$ 64,860,000	[5]	$ 64,860,000	[5]
Credit facility, capacity							225,000,000
Term of Line of Credit Extension							1 year
Basis floor on variable rate																																											3.00%	[2]
Notional amount of interest rate cap													202,000,000
Interest rate cap (as a percent)													5.40%	[2]
Aggregate principal outstanding																															492,000,000
Debt repaid				0		265,442,000																							96,000	144,000,000
Debt, effective yield																															12.875%
Repayments of Secured Debt																				60,000,000	107,000,000																				24,900,000	69,200,000
Hotels securing retired loans																				5																											7	4	3	4		2
Interest expense		31,359,000	32,865,000	93,547,000	98,172,000
Interest income		(34,000)	(59,000)	(117,000)	(151,000)
Capitalized interest		3,100,000	403,000	9,700,000	913,000
Debt Instrument, Face Amount																	160,800,000
Term of Loan																10 years	10 years
Payments of Debt Extinguishment Costs	$ 11,600,000

[1] Our $225 million line of credit can be extended for one year (to 2015), subject to satisfying certain conditions.

[2] LIBOR (for this loan) is subject to a 3% floor. We purchased an interest rate cap ($202 million notional amount) that caps LIBOR at 5.4% and expires May 2013.

[3] The hotels securing this debt are subject to separate loan agreements and are not cross-collateralized.

[4] These notes have $492 million in aggregate principal outstanding ($144 million and $96,000 in aggregate principal amount was redeemed in June 2011 and January 2012, respectively) and were initially sold at a discount that provided an effective yield of 12.875% before transaction costs.

[5] This loan is related to our Knickerbocker redevelopment project and is fully secured by restricted cash and a mortgage. Because we were able to assume an existing loan when we purchased this hotel, we were not required to pay any local mortgage recording tax. When that loan is transferred to a new lender and made part of our construction loan, we expect to only pay such tax to the extent of the incremental principal amount of the construction loan.