Stockholders' Equity and Earnings Per Common Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Oct. 25, 2021
Outstanding Restricted Stock and Stock Success Unit Grant Prices Lower Limit		$ 12.45		$ 12.45
Outstanding Restricted Stock and Stock Success Unit Grant Prices Upper Limit		$ 39.82		$ 39.82
Antidilutive Securities Excluded from Computation of Earnings Per Share			1,300,000	100,000	1,100,000
Authorized Amount of Treasury Share Repurchases Under Stock Repurchase Program						$ 250.0
Expiration Date of Share Repurchase Program Authorized in October 2021				Dec. 31, 2022
Number of Treasury Shares Repurchased		1,164,800	0	4,243,400	0
Cost of Shares Repurchased	[1]	$ 42.6	$ 0.0	$ 137.5	$ 0.0
Remaining Amount of Treasury Share Repurchases Authorized Under Stock Repurchase Program		$ 62.5		$ 62.5
Authorized Shares of Preferred Stock		25,000,000.0		25,000,000.0
Par Value Per Share of Preferred Stock		$ 0.10		$ 0.10
Issued Shares of Preferred Stock		0		0
Accelerated Share Repurchase Agreement [Member]
Number of Treasury Shares Repurchased				1,700,000
Cost of Shares Repurchased				$ 50.0
Open Market Share Repurchases [Member]
Number of Treasury Shares Repurchased		1,200,000		2,500,000
Cost of Shares Repurchased		$ 42.6		$ 87.5

[1] Includes a de minimis amount and $0.1 million of commissions for the three and nine months ended September 30, 2022.