Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Finance lease expense:
Total lease expense	$ 178,080
Operating Expenses
Operating lease expense:
Operating lease expense	20,436
Short-term and variable lease expense	42,159
Interest Expense, Net
Finance lease expense:
Interest expense on lease liabilities	98,690
Depreciation and Amortization Expense
Finance lease expense:
Amortization of ROU assets	$ 16,795