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Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2011

Segment Reporting (Tables) [Abstract]

Summary of information for reportable segments


																						Property				Net				Real Estate
		Rental				Resident Fees				Interest				Other				Total				Operating				Operating				Depreciation/				Interest				Total
		Income				and Services				Income				Income				Revenues				Expenses				Income⁽¹⁾				Amortization				Expense				Assets
Three Months Ended June 30, 2011
Senior housing triple-net		$	169,247			$	—			$	11,036			$	4,497			$	184,780			$	—			$	184,780			$	47,443			$	3,637			$	7,338,125
Senior housing operating			—				123,149				—				—				123,149				84,334				38,815				38,176				12,974				2,257,709
Medical facilities⁽²⁾			74,942				—				1,830				466				77,238				16,693				60,545				25,434				7,681				3,428,309
Non-segment/Corporate			—				—				—				378				378				—				378				—				60,481				456,518

		$	244,189			$	123,149			$	12,866			$	5,341			$	385,545			$	101,027			$	284,518			$	111,053			$	84,773			$	13,480,661

Three Months Ended June 30, 2010
Senior housing triple-net		$	97,254			$	—			$	8,830			$	1,536			$	107,620			$	—			$	107,620			$	28,553			$	5,022
Medical facilities⁽²⁾			54,540				—				505				302				55,347				13,003				42,344				18,898				6,476
Non-segment/Corporate			—				—				—				812				812				—				812				—				26,052

		$	151,794			$	—			$	9,335			$	2,650			$	163,779			$	13,003			$	150,776			$	47,451			$	37,550


																						Property				Net				Real Estate
		Rental				Resident Fees				Interest				Other				Total				Operating				Operating				Depreciation/				Interest
		Income				and Services				Income				Income				Revenues				Expenses				Income⁽¹⁾				Amortization				Expense
Six Months Ended June 30, 2011
Senior housing triple-net		$	274,988			$	—			$	20,414			$	5,004			$	300,406			$	—			$	300,406			$	78,399			$	5,703
Senior housing operating			—				194,435				—				—				194,435				133,606				60,829				58,307				19,501
Medical facilities⁽²⁾			141,263				—				4,161				2,251				147,675				32,735				114,940				49,115				14,967
Non-segment/Corporate			—				—				—				910				910				—				910				—				103,932

		$	416,251			$	194,435			$	24,575			$	8,165			$	643,426			$	166,341			$	477,085			$	185,821			$	144,103

Six Months Ended June 30, 2010
Senior housing triple-net		$	190,490			$	—			$	17,405			$	2,028			$	209,923			$	—			$	209,923			$	54,954			$	9,693
Medical facilities			105,410				—				978				574				106,962				26,722				80,240				36,078				12,053
Non-segment/Corporate			—				—				—				1,044				1,044				—				1,044				—				45,789

		$	295,900			$	—			$	18,383			$	3,646			$	317,929			$	26,722			$	291,207			$	91,032			$	67,535


(1)		Net operating income (“NOI”) is used to evaluate the operating performance of our properties. We define NOI as total revenues, including tenant reimbursements, less property level operating expenses, which exclude depreciation and amortization, general and administrative expenses, impairments and interest expense. We believe NOI provides investors relevant and useful information because it measures the operating performance of our properties at the property level on an unleveraged basis. We use NOI to make decisions about resource allocations and to assess the property level performance of our properties.

(2)		Excludes income and expense amounts related to properties held in unconsolidated joint ventures. Please see Note 7 for additional information.