Leases - Other Information (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Accumulated amortization, finance lease, right-of-use asset	$ 528,600		$ 474,800
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	54,417	$ 52,701
Operating cash flows from operating leases	102,146	101,875
Financing cash flows from finance leases	42,681	43,112
Right-of-use assets obtained in exchange for lease obligations
Finance leases	311,951	2,597
Operating leases	$ 14,114	$ 77,905
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	$ 1,516,351		$ 1,277,614

Cash Flow, Lessee [Abstract]

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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, after accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated amortization of right-of-use asset from 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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