Pensions and Other Post-retirement Benefits - Components of Net Periodic Benefit Cost (Credit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 12,281	$ 12,910	$ 12,094
Interest cost	14,377	11,518	14,905
Expected return on plan assets	(49,646)	(37,368)	(34,029)
Amortization of prior service cost (credit)	139	164	178
Recognized net actuarial losses	11,704	17,458	15,799
Settlement/curtailment (gain) loss	(354)	(2,234)	1,135
Net periodic benefit cost	(11,499)	2,448	10,082
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	327	398	396
Interest cost	590	476	716
Expected return on plan assets	0	0	0
Amortization of prior service cost (credit)	(338)	(358)	(394)
Recognized net actuarial losses	1,242	1,597	1,145
Settlement/curtailment (gain) loss	0	0	0
Net periodic benefit cost	$ 1,821	$ 2,113	$ 1,863