Assets and Liabilities Held for Sale (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended						0 Months Ended			3 Months Ended			9 Months Ended			0 Months Ended		0 Months Ended
	Sep. 30, 2014 Properties		Sep. 30, 2013 Properties		Sep. 30, 2014 Properties		Sep. 30, 2013 Properties		Aug. 08, 2013	Aug. 08, 2013 Purchase Agreement [Member]	May 08, 2014 A-T-T St. Louis, St. Louis, Missouri [Member]	May 08, 2014 Non Core [Member]	Aug. 09, 2013 Non Core [Member] Property	Sep. 30, 2014 Non Core [Member] Properties		Sep. 30, 2013 Non Core [Member]	Sep. 30, 2014 Non Core [Member] Properties	Sep. 30, 2013 Non Core [Member]	Aug. 08, 2013 Non Core [Member] Purchase Agreement [Member] Property	Sep. 18, 2014 Select Service Lodging Properties Held for Sale - 52 Properties [Member]	Sep. 17, 2014 Select Service Lodging Properties Held for Sale - 52 Properties [Member] Room Properties	Nov. 18, 2014 Select Service Lodging Properties Held for Sale - 52 Properties [Member]
Long Lived Assets Held-for-sale [Line Items]
Date of executed purchase agreement to sell portfolio of assets													Aug. 08, 2013							Sep. 17, 2014
Number of Real Estate Properties	203		268		203		268														52
Number of Units in Real Estate Property																					6,976
Sales agreement, number of properties to be sold																			294
Sales agreement, number of properties to be sold in future periods														280			280
Sales agreement, number of properties to be excluded from sale													13
Discontinued Operation, Gross Disposition Price					$ 1,476,500		$ 1,815,900				$ 228,400
Consideration received										2,300,000											1,100,000
Escrow Deposits Related to Property Sales											10,000
Disposal Date											May 08, 2014	May 08, 2014										Nov. 17, 2014
Value of excluded properties in sales agreement									180,100
Asset Impairment Charges	$ 2,337	[1]	$ 39,942	[2]	$ 80,281	[3]	$ 225,009	[4]			$ 67,647			$ 670	[1]	$ 2,044	$ 75,616	$ 177,655

[1] Total provision for asset impairment included $1,667 related to one lodging property and $670 related to one non-core property.

[2] Total provision for asset impairment included $26,175 related to two lodging properties, $11,723 related to three retail properties and $2,044 related to four non-core properties.

[3] Total provision for asset impairment included $4,665 related to two lodging properties and $75,616 related to five non-core properties.

[4] Total provision for asset impairment included $26,175 related to two lodging properties, $21,179 related to four retail properties and $177,655 related to eleven non-core properties.