CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 120,807	$ 121,274
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amounts in discontinued operations)	247,453	193,876
Amortization of deferred revenue and lease intangibles, net	(6,603)	(5,383)
Other non-cash amortization	(519)	(1,965)
Stock-based compensation	6,307	6,044
Straight-lining of rental income, net	(8,679)	(7,914)
Loss (gain) on extinguishment of debt, net	21	(259)
Gain on real estate dispositions (including amounts in discontinued operations)	(6,686)	(2,437)
Income tax (benefit) expense	(7,850)	3,433
Loss (income) from unconsolidated entities	251	(248)
Other	2,860	3,076
Changes in operating assets and liabilities:
Decrease in other assets	4,615	6,241
Increase in accrued interest	15,792	6,753
Decrease in accounts payable and other liabilities	(23,600)	(38,070)
Net cash provided by operating activities	344,169	284,421
Cash flows from investing activities:
Net investment in real estate property	(1,072,539)	(181,866)
Investment in loans receivable and other	(39,573)	(1,192)
Proceeds from real estate disposals	166,341	26,150
Proceeds from loans receivable	92,056	1,163
Purchase of marketable securities	0	(25,000)
Funds held in escrow for future development expenditures	4,003	2,602
Development project expenditures	(33,467)	(23,948)
Capital expenditures	(21,171)	(16,134)
Other	(4,180)	(125)
Net cash used in investing activities	(908,530)	(218,350)
Cash flows from financing activities:
Net change in borrowings under credit facility	(452,897)	181,754
Proceeds from debt	1,092,833	0
Repayment of debt	(24,647)	(67,773)
Purchase of noncontrolling interest	(2,660)	0
Payment of deferred financing costs	(14,435)	(167)
Issuance of common stock, net	285,327
Cash distribution to common stockholders	(254,910)	(213,473)
Cash distribution to redeemable OP unitholders	(2,365)	(1,402)
Purchases of redeemable OP units	(569)	0
Distributions to noncontrolling interest	(1,822)	(2,237)
Other	5,690	1,641
Net cash provided by (used in) financing activities	629,545	(101,657)
Net increase (decrease) in cash and cash equivalents	65,184	(35,586)
Effect of foreign currency translation on cash and cash equivalents	(307)	561
Cash and cash equivalents at beginning of period	55,348	94,816
Cash and cash equivalents at end of period	120,225	59,791
Assets and liabilities assumed from acquisitions:
Real estate investments	2,542,829	2,952
Other assets acquired	16,711	0
Debt assumed	177,857	0
Other liabilities	45,736	2,952
Deferred income tax liability	44,117	0
Noncontrolling interests	87,245	0
Stock Issued	$ 2,204,585	$ 0