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Summary of Significant Accounting Policies - Leases Costs (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
Lessee, Lease, Description [Line Items]  
Operating lease cost $ 459,619
Depreciation of financing lease right-of-use assets 59,258
Interest expense for financing lease liabilities 21,031
Total financing lease cost 80,289
Variable lease costs $ 105,922
Operating leases, Remaining Lease Term 11 years
Finance leases, Remaining Lease Term 11 years 7 months 6 days
Operating leases, Discount Rate 7.10%
Financing leases, Discount Rate 5.70%
Cost of Sales  
Lessee, Lease, Description [Line Items]  
Operating lease cost $ 447,194
Selling, general and administrative expenses  
Lessee, Lease, Description [Line Items]  
Operating lease cost $ 12,425