Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Supplemental Disclosures:
Cash paid for interest	$ 246,602	$ 280,659
Cash paid for income taxes	18,822	10,205
Non-cash investing and financing activities:
Accrued capital expenditures and real estate developments	3,556	4,363
Accrued deferred financing costs	860	164
Distributions declared and unpaid	146,118	130,648
Accrued equity issuance costs	9	0
Mortgage note payable relieved by foreclosure	38,050	53,798
Mortgage notes payable assumed in real estate disposition	$ 55,000	$ 300,720