Stockholders' Equity - Narrative (Details) - USD ($) shares in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Nov. 30, 2018
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 1,100,000,000
Repurchases of common stock	$ 58,241,000	$ 80,550,000
Amortization expense from capitalized stock-based compensation	$ 7,700,000	$ 7,600,000
Common Stock
Class of Stock [Line Items]
Shares repurchased during period (in shares)	0.6
Repurchases of common stock	$ 58,200,000