Leases - Other Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Accumulated amortization, finance lease, right-of-use asset	$ 564,800		$ 474,800
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	81,827	$ 79,140
Operating cash flows from operating leases	154,262	157,106
Financing cash flows from finance leases	74,446	62,785
Right-of-use assets obtained in exchange for lease obligations
Finance leases	357,137	196,725
Operating leases	$ 65,906	$ 143,144
Weighted-average remaining lease term - finance leases	14 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	$ 1,551,396		$ 1,277,614