Pension Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Amount of contributions to contributory plan	$ 73,900,000	$ 72,000,000	$ 69,800,000
Accumulated benefit obligation	85,600,000	87,300,000
Fair value of plan assets exceeded accumulated benefit obligation	12,800,000	$ 9,400,000
Estimated net loss that will be amortized from accumulated other comprehensive income over the next fiscal year	0
Estimated prior service cost that will be amortized from accumulated other comprehensive income over the next fiscal year	$ 0