Leases - Maturity ASC 842 (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leases
2019	$ 77,495
2020	312,861
2021	298,025
2022	294,696
2023	290,698
Thereafter	806,856
Total lease payments	2,080,631
Imputed interest and variable lease payments	(572,238)
Total lease obligations	1,508,393
Financing Leases
2019	22,052
2020	89,090
2021	90,330
2022	91,719
2023	93,190
Thereafter	429,663
Total lease payments	816,044
Purchase option liability and non-cash gain on future sale of property	575,791
Imputed interest and variable lease payments	(533,798)
Total lease obligations	$ 858,037