Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Supplemental cash flow information:
Interest paid, net of capitalized interest	$ 99,934	$ 141,777
Income taxes paid (refunded)	1,171	2,735
Capitalized interest	15,413	8,033
Supplemental schedule of non-cash investing and financing activities:
Accrued construction costs	102,307	66,233
Retained equity method investment and proceeds receivable from U.K. JV transaction	0	507,369
Derecognition of U.K. Bridge Loan receivable	0	147,474
Consolidation of net assets related to U.K. Bridge Loan	0	106,457
Vesting of restricted stock units and conversion of non-managing member units into common stock	4,498	340
Liabilities assumed with real estate acquisitions	59,778	0
Conversion of DFLs to real estate	350,540	0
Net noncash impact from the consolidation of previously unconsolidated joint ventures	$ 17,850	$ 0

Conversion of Direct Finance Leases to Real Estate

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