Leases - Supplemental Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 115,684	$ 132,669
Operating cash flows from financing leases	86	71
Financing cash flows from finance leases	1,864	1,281
Right-of-use assets obtained in exchange for lease obligations
Operating leases(2)	135,919	11,108
Finance leases	$ 1,695	$ 1,469