Leases - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Leases [Abstract]
Accumulated amortization, finance lease, right-of-use asset	$ 498,100		$ 474,800
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	26,967	$ 26,604
Operating cash flows from operating leases	51,985	49,262
Financing cash flows from finance leases	18,977	31,158
Right-of-use assets obtained in exchange for lease obligations
Finance leases	115,274	16,307
Operating leases	$ 6,612	$ 28,987
Weighted-average remaining lease term - finance leases	15 years		15 years
Weighted-average remaining lease term - operating leases	13 years		13 years
Weighted-average discount rate - finance leases	8.00%		9.00%
Weighted-average discount rate - operating leases	4.00%		4.00%
Right-of-use asset, finance lease	$ 1,343,406		$ 1,277,614

Cash Flow, Lessee [Abstract]

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Finance Lease, Right-of-Use Asset, Accumulated Amortization

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Right-Of-Use Assets Obtained in Exchange for Lease Obligations [Abstract]

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Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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Amount of lessee's right to use underlying asset under finance lease.

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Weighted average discount rate for finance lease calculated at point in time.

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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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