CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 48,199	$ 736,961
Depreciation and amortization of real estate, in-place lease and other intangibles	369,629	343,496
Amortization of market lease intangibles, net	(980)	(619)
Amortization of deferred compensation	21,068	16,467
Amortization of deferred financing costs, net	14,950	14,122
Straight-line rents	(24,817)	(35,082)
Loan and direct financing lease interest accretion	(71,243)	(58,271)
Deferred rental revenues	(1,496)	(420)
Equity income from unconsolidated joint ventures	(33,916)	(39,388)
Distributions of earnings from unconsolidated joint ventures	4,587	3,895
Lease termination income, net	(1,103)	(38,001)
Gain on sales of real estate	(6,377)	(28,010)
Foreign exchange and other (gains) losses, net	(7,103)	(2,143)
Impairments	620,155
Changes in:
Accounts receivable, net	(10,634)	(7,193)
Other assets	(1,186)	(14,345)
Accounts payable and other accrued liabilities	(52,073)	(8,447)
Net cash provided by operating activities	867,660	883,022
Cash flows from investing activities:
Acquisition of RIDEA III, net	(770,325)
Cash used to acquire the CCRC unconsolidated joint venture interest, net		(370,186)
Acquisitions of other real estate	(430,336)	(467,147)
Development of real estate	(190,082)	(118,732)
Leasing costs and tenant and capital improvements	(52,371)	(44,953)
Proceeds from sales of real estate, net	19,555	36,938
Contributions to unconsolidated joint ventures	(43,242)	(2,935)
Distributions in excess of earnings from unconsolidated joint ventures	16,086	1,986
Proceeds from sales of marketable securities	782
Principal repayments on loans receivable	51,491	49,503
Investments in loans receivable and other	(283,252)	(24,480)
(Increase) decrease in restricted cash	(3,891)	(17,219)
Net cash used in investing activities	(1,685,585)	(957,225)
Cash flows from financing activities:
Net borrowings under bank line of credit	282,099	70,000
Repayments under bank line of credit	(102,063)
Borrowings under term loan	333,014
Issuance of senior unsecured notes	1,338,555	1,150,000
Repayments of senior unsecured notes	(400,000)	(487,000)
Issuance of mortgage and other debt		39,671
Repayments of mortgage and other debt	(50,187)	(202,134)
Deferred financing costs	(14,556)	(16,550)
Issuance of common stock and exercise of options	169,497	73,059
Repurchase of common stock	(8,006)	(11,599)
Dividends paid on common and preferred stock	(783,578)	(750,835)
Issuance of noncontrolling interests	4,812	4,282
Distributions to noncontrolling interests	(13,707)	(11,719)
Net cash provided by (used in) financing activities	755,880	(142,825)
Effect of foreign exchange on cash and cash equivalents	(1,267)	3
Net increase (decrease) in cash and cash equivalents	(63,312)	(217,025)
Cash and cash equivalents, beginning of year	183,810	300,556
Cash and cash equivalents, end of year	$ 120,498	$ 83,531