Stockholders' Equity (Details 2) - USD ($) $ in Thousands, shares in Millions		3 Months Ended		6 Months Ended
	Oct. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2021
Accelerated share repurchases
Repurchase and retirement of common stock under repurchase program		$ (100,068)		$ (100,068)
2020 Accelerated share repurchase program
Accelerated share repurchases
Accelerated share repurchase program, upfront payment			$ 50,000
Repurchase and retirement of common stock under repurchase program (in shares)		(0.1)	(2.6)
Repurchase and retirement of common stock under repurchase program			$ (40,000)
Remaining initial payment, unsettled forward contract indexed to Company's stock			$ 10,000
2021 Accelerated share repurchase program
Accelerated share repurchases
Accelerated share repurchase program, upfront payment		$ 100,000
Repurchase and retirement of common stock under repurchase program (in shares)	(0.4)	(3.9)
Repurchase and retirement of common stock under repurchase program		$ (80,000)
Remaining initial payment, unsettled forward contract indexed to Company's stock		$ 20,000