Leases Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Operating lease liabilities	$ 471,777
Total leased assets	557,159
Total lease liabilities	550,488
Other assets [Member]
Operating leased assets	471,929
Property and equipment, net [Member]
Finance leased assets, net	85,230
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	30,100
Accrued expenses [Member]
Operating lease liabilities, current	60,624
Current portion of long-term debt [Member]
Finance lease liabilities, current	14,402
Other long-term liabilities [Member]
Operating lease liabilities, non-current	411,153
Long-term debt, less current portion [Member]
Finance lease liabilities, non-current	$ 64,309
Accounting Standards Update 2016-02 [Member]
Operating leased assets		$ 495,000
Operating lease liabilities		$ 495,000