Pensions and Other Post-retirement Benefits - Schedule of Defined Benefit Pension Plans and Other Postretirement Benefits Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Funded Status
Noncurrent assets	$ 279,450	$ 224,638
Noncurrent liabilities	(143,834)	(134,251)
Pension Benefits
Change in Benefit Obligations
Benefit obligations at January 1	474,484	521,474
Service cost	8,118	9,214	$ 7,587
Interest cost	24,178	23,307	23,775
Participant contributions	165	232
Plan amendments	605	(20)
Actuarial (gains) losses	(5,524)	(27,259)
Benefits paid	(29,818)	(28,159)
Settlements	(2,282)	(17,576)
Acquisitions	8,554	0
Currency translation	11,263	(6,729)
Benefit obligations at December 31	489,743	474,484	521,474
Change in Plan Assets
Fair value of plan assets at January 1	580,364	563,449
Actual return on plan assets	83,400	55,610
Employer contributions	6,644	7,877
Participant contributions	165	232
Settlements	(2,282)	(17,576)
Benefits paid	(29,818)	(28,159)
Administrative expenses paid	(56)	(62)
Currency translation	546	(1,007)
Fair value of plan assets at December 31	638,963	580,364	563,449
Funded Status
Funded status at December 31	149,220	105,880
Unrecognized prior service cost	794	728
Unrecognized net actuarial (gains) losses	(1,252)	40,339
Net amount recognized	148,762	146,947
Noncurrent assets	279,450	224,638
Current liabilities	(8,522)	(7,474)
Noncurrent liabilities	(121,708)	(111,284)
Net amount recognized	149,220	105,880
Amounts Recognized in Accumulated Other Comprehensive Loss
Net actuarial (gains) losses	(1,252)	40,339
Prior service cost	794	728
Total (before tax effects)	(458)	41,067
Accumulated Benefit Obligations for all Defined Benefit Plans	464,203	442,734
Other Benefits
Change in Benefit Obligations
Benefit obligations at January 1	22,046	21,386
Service cost	124	176	214
Interest cost	1,104	994	1,090
Participant contributions	222	285
Plan amendments	0	0
Actuarial (gains) losses	(569)	1,696
Benefits paid	(2,269)	(2,491)
Settlements	0	0
Acquisitions	0	0
Currency translation	0	0
Benefit obligations at December 31	20,658	22,046	21,386
Change in Plan Assets
Fair value of plan assets at January 1	0	0
Actual return on plan assets	0	0
Employer contributions	2,047	2,206
Participant contributions	222	285
Settlements	0	0
Benefits paid	(2,269)	(2,491)
Administrative expenses paid	0	0
Currency translation	0	0
Fair value of plan assets at December 31	0	0	$ 0
Funded Status
Funded status at December 31	(20,658)	(22,046)
Unrecognized prior service cost	0	0
Unrecognized net actuarial (gains) losses	5,584	6,804
Net amount recognized	(15,074)	(15,242)
Noncurrent assets	0	0
Current liabilities	(1,963)	(2,145)
Noncurrent liabilities	(18,695)	(19,901)
Net amount recognized	(20,658)	(22,046)
Amounts Recognized in Accumulated Other Comprehensive Loss
Net actuarial (gains) losses	5,584	6,804
Prior service cost	0	0
Total (before tax effects)	5,584	6,804
Accumulated Benefit Obligations for all Defined Benefit Plans	$ 0	$ 0