Segment Disclosures (Tables)

12 Months Ended

Dec. 31, 2011

Segment Disclosures

Information of revenue of reportable segment

Segments	Rental Revenues(1)		Income From DFLs		Interest Income		Investment Management Fees		Total Revenues		NOI(2)
Senior housing	$	428,760	$	103,896	$	178	$	70	$	532,904	$	498,110
Post-acute/skilled nursing		38,003		360,808		98,450		—		497,261		398,218
Life science		288,151		—		—		4		288,155		235,355
Medical office		320,115		—		—		1,999		322,114		192,211
Hospital		83,128		—		1,236		—		84,364		78,798
Total	$	1,158,157	$	464,704	$	99,864	$	2,073	$	1,724,798	$	1,402,692

        For the year ended December 31, 2010:

Segments	Rental Revenues(1)		Income From DFLs		Interest Income		Investment Management Fees		Total Revenues		NOI(2)
Senior housing	$	331,828	$	49,438	$	364	$	2,300	$	383,930	$	352,469
Post-acute/skilled nursing		37,242		—		121,703		—		158,945		37,042
Life science		276,762		—		—		4		276,766		228,270
Medical office		309,285		—		—		2,362		311,647		181,400
Hospital		83,491		—		38,096		—		121,587		78,661
Total	$	1,038,608	$	49,438	$	160,163	$	4,666	$	1,252,875	$	877,842

        For the year ended December 31, 2009

Segments	Rental Revenues(1)		Income From DFLs		Interest Income		Investment Management Fees		Total Revenues		NOI(2)
Senior housing	$	286,010	$	51,495	$	1,147	$	2,789	$	341,441	$	335,980
Post-acute/skilled nursing		36,585		—		82,704		—		119,289		36,450
Life science		254,979		—		—		4		254,983		207,694
Medical office		306,297		—		—		2,519		308,816		175,818
Hospital		81,361		—		40,295		—		121,656		77,487
Total	$	965,232	$	51,495	$	124,146	$	5,312	$	1,146,185	$	833,429

(1)

Represents rental and related revenues, tenant recoveries, and resident fees and services.

(2)

NOI is a non-GAAP supplemental financial measure used to evaluate the operating performance of real estate. The Company defines NOI as rental revenues, including tenant recoveries, resident fees and services, and income from direct financing leases, less property level operating expenses. NOI excludes interest income, investment management fee income, depreciation and amortization, interest expense, general and administrative expenses, litigation settlement and provision, impairments, impairment recoveries, other income, net, income taxes, equity income from and impairments of investments in unconsolidated joint ventures, and discontinued operations. The Company believes NOI provides investors relevant and useful information because it measures the operating performance of the Company's real estate at the property level on an unleveraged basis. The Company uses NOI to make decisions about resource allocations and assess property level performance. The Company believes that net income is the most directly comparable GAAP measure to NOI. NOI should not be viewed as an alternative measure of operating performance to net income as defined by GAAP because it does not reflect the aforementioned excluded items. Further, the Company's definition of NOI may not be comparable to the definition used by other REITs, as those companies may use different methodologies for calculating NOI.

Reconciliation from NOI to reported net income

	Years ended December 31,
	2011			2010			2009
Net operating income from continuing operations	$	1,402,692		$	877,842		$	833,429
Interest income		99,864			160,163			124,146
Investment management fee income		2,073			4,666			5,312
Depreciation and amortization		(356,623	)		(311,008	)		(315,736	)
Interest expense		(419,337	)		(288,538	)		(298,600	)
General and administrative		(96,150	)		(83,046	)		(77,899	)
Litigation settlement and provision		(125,000	)		—			(101,973	)
(Impairments) recoveries		(15,400	)		11,900			(75,389	)
Other income, net		12,335			15,818			7,768
Income taxes		(1,249	)		(412	)		(1,910	)
Equity income from unconsolidated joint ventures		46,750			4,770			3,511
Impairments of investment in unconsolidated joint venture		—			(71,693	)		—
Total discontinued operations		4,539			23,933			43,492
Net income	$	554,494		$	344,395		$	146,151

Reconciliation of company's assets to total assets

	December 31,
Segments	2011			2010
Senior housing	$	5,911,352		$	4,342,289
Post-acute/skilled nursing		5,644,472			2,133,640
Life science		3,886,851			3,709,528
Medical office		2,336,302			2,299,311
Hospital		757,618			770,038
Gross segment assets		18,536,595			13,254,806
Accumulated depreciation and amortization		(1,670,511	)		(1,427,510	)
Net segment assets		16,866,084			11,827,296
Real estate held-for-sale, net		4,159			20,961
Other non-segment assets		538,232			1,483,666
Total assets	$	17,408,475		$	13,331,923