Retirement Plans - Components of Estimated Net Periodic Benefit Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 7.4	$ 6.2	$ 8.8
Expected return on assets	(11.6)	(14.2)	(13.9)
Amortization, net	3.3	3.8	3.1
Net pension plan income	$ (0.9)	$ (4.2)	$ (2.0)
Weighted-average assumption used to calculate net pension plan income:
Discount rate	2.90%	2.60%	3.20%
Expected return on plan assets	4.80%	6.00%	6.00%