Accounts Receivable Sales Agreement (Details) - USD ($) $ in Thousands	Jul. 13, 2021	Dec. 31, 2021	Dec. 30, 2021	Jul. 12, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable Sales Agreement
Cash and cash equivalents		$ 991,471			$ 472,246	$ 435,990	$ 447,766
5.50% senior notes due January 2023
Accounts Receivable Sales Agreement
Interest rate (as a percent)		5.50%			5.50%
Accounts Receivable Sales Agreement.
Accounts Receivable Sales Agreement
Agreement amount	$ 150,000			$ 250,000
Agreement expiration term extension (in years)	2 years
Accounts receivables sold to purchasers		$ 113,000			$ 54,000
Trade receivables pledged as collateral			$ 44,200		$ 63,100