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Stockholders' Equity (Details 2) - USD ($) $ in Thousands, shares in Millions		3 Months Ended			9 Months Ended
	Oct. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Accelerated share repurchases
Repurchase and retirement of common stock under repurchase program		$ 13			$ 100,081
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, 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, shares			(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
2021 Accelerated share repurchase program | Subsequent event
Accelerated share repurchases
Repurchase and retirement of common stock under repurchase program, shares	(0.4)

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