Summary of Significant Accounting Policies - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Operating cash flows used in operating leases	$ 101,605	$ 93,645
Operating cash flows used in financing leases (interest)	4,678	4,975
Financing cash flows used in financing leases	10,362	12,441
Operating lease modifications and reassessments	23,767	31,994
New operating leases (including acquisitions and sale-leaseback transactions)	$ 125,902	$ 48,200