Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating activities
Net income	$ 78,980	$ 134,329
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Depreciation and amortization	387,599	260,385
Other amortization expenses	6,543	8,519
Provision for loan losses	0	0
Stock-based compensation expense	12,694	13,634
Loss (gain) on derivatives, net	407	2,121
Loss (gain) on extinguishment of debt, net	(308)	576
Income from unconsolidated entities	3,198	(2,989)
Rental income in excess of cash received	(18,463)	(20,793)
Amortization related to above (below) market leases, net	245	(205)
Loss (gain) on sales of properties, net	(52,495)	(33,219)
Distributions by unconsolidated entities	0	4,123
Increase (decrease) in accrued expenses and other liabilities	25,507	16,355
Decrease (increase) in receivables and other assets	(36,356)	(27,556)
Net cash provided from (used in) operating activities	406,737	351,038
Investing activities
Investment in real property, net of cash acquired	(2,600,189)	(1,158,266)
Capitalized interest	(2,992)	(4,558)
Investment in real estate loans receivable	(53,072)	(20,354)
Other investments, net of payments	8,051	20,147
Principal collected on real estate loans receivable	55,547	12,861
Contributions to unconsolidated entities	(361,107)	(227,554)
Distributions by unconsolidated entities	14,786	0
Proceeds from (payments on) derivatives	(2,604)	2,217
Decrease (increase) in restricted cash	(82,292)	(9,024)
Proceeds from sales of real property	321,303	156,689
Net cash provided from (used in) investing activities	(2,702,569)	(1,227,842)
Financing activities
Net increase (decrease) under unsecured lines of credit arrangements	0	(217,000)
Proceeds from issuance of senior unsecured notes	497,862	593,319
Payments to extinguish senior unsecured notes	(3)	(125,585)
Secured debt issued	71,340	139,395
Payments on secured debt	(73,557)	(252,135)
Net proceeds from the issuance of common stock	1,730,235	1,120,265
Net proceeds from the issuance of preferred stock	0	277,688
Redemption of preferred stock	0	(275,000)
Decrease (increase) in deferred loan expenses	(10,790)	(4,698)
Contributions by noncontrolling interests	3,730	11,110
Distributions to noncontrolling interests	(9,860)	(9,673)
Cash distributions to stockholders	(433,018)	(337,429)
Other financing activities	(2,072)	(2,040)
Net cash provided from (used in) financing activities	1,773,867	918,217
Effect of foreign currency translation on cash and cash equivalents	673	0
Increase (decrease) in cash and cash equivalents	(521,292)	41,413
Cash and cash equivalents at beginning of period	1,033,764	163,482
Cash and cash equivalents at end of period	512,472	204,895
Supplemental cash flow information:
Interest paid	196,980	180,460
Income taxes paid	$ 2,625	$ 2,729