Pension and Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Retirement Benefits [Abstract]
Defined benefit plan contributions	$ 0.9	$ 0.0	$ 1.1	$ 0.0
Unfunded liability plans	$ 3.0		$ 3.0		$ 4.1