Stockholders' Equity - Schedule of Share Repurchase Authorized by Board of Directors (Detail)	3 Months Ended
	Mar. 31, 2021 USD ($)
February, 2019 [Member]
Equity, Class of Treasury Stock [Line Items]
Share Repurchase Authorization	$ 300,000,000
Expiration	Dec. 31, 2020
October, 2019 [Member]
Equity, Class of Treasury Stock [Line Items]
Share Repurchase Authorization	$ 300,000,000
Expiration	Dec. 31, 2021