Accounts Receivable Sales Agreement - Summary of Accounts Receivable Sales Agreement Activity and Outstanding Amount (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Receivables [Abstract]
Receivables sold to the financial institution and derecognized	$ 1,884,023	$ 1,279,420	$ 5,700,895	$ 2,181,746
Cash collected on sold receivables	$ 1,884,028	$ 1,279,430	$ 5,700,896	$ 1,681,732