Leases - Components of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finance lease cost:
Amortization of lease assets	$ 1,097	$ 1,234	$ 1,393
Interest on lease liabilities	90	107	64
Operating lease cost	104,668	116,672	121,767
Short-term and variable lease cost	716,722	656,649	837,244
Total lease cost	$ 822,577	$ 774,662	$ 960,468