Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Supplemental cash flow information:
Interest paid, net of capitalized interest	$ 53,475	$ 92,701
Income taxes paid (refunded)	(769)	340
Capitalized interest	8,369	3,578
Supplemental schedule of non-cash investing and financing activities:
Accrued construction costs	94,904	62,160
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	4,341	258
Conversion of DFLs to real estate	$ 350,540	$ 0

Conversion of Direct Finance Leases to Real Estate

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Loan Receivable Reduction

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The value of stock issued upon which restrictions have lapsed.

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Future cash outflow to pay for construction in progress expenditures that have occurred.

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The fair value of assets acquired in noncash investing or financing activities.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of interest capitalized during the period.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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