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Summary of Significant Accounting Policies - Supplemental Cash Flows (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]      
Operating cash flows used in operating leases $ 392,987 $ 360,088 $ 338,059
Operating cash flows used in financing leases (interest) 19,808 19,942 21,031
Financing cash flows used in financing leases 46,118 47,829 58,033
Operating lease modifications and reassessments 144,310 143,382 108,023
New operating leases (including acquisitions and sale-leaseback transactions) $ 282,490 $ 370,011 $ 170,464