Pension and Other Postretirement Benefits - Summary of Changes in the Fair Value of the Level 3 Plan Assets for the U.S. and Foreign Pension Benefits Plans (Detail) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 GBP (£)	Dec. 31, 2022 USD ($)
Foreign Defined Benefits Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	$ 41,679	£ 34,475
Fair value of plan assets, Ending balance	42,338	£ 33,257	$ 41,679
Defined Benefit Pension Plan [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	161,374		214,937
Fair value of plan assets, Ending balance	163,929		161,374
Defined Benefit Pension Plan [Member] | Foreign Defined Benefits Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	41,679		71,614
Fair value of plan assets, Ending balance	42,338		41,679
Defined Benefit Pension Plan [Member] | Alternative Investments [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	6,569
Fair value of plan assets, Ending balance	6,035		6,569
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	6,569
Fair value of plan assets, Ending balance	5,714		6,569
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Foreign Defined Benefits Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	831		20,828
Transfers to other plan assets			(16,557)
Realized gains (losses)			1,763
Change in net unrealized gains (losses)	52		(3,109)
Other, primarily impact from changes in foreign currency exchange rates	45		(2,094)
Fair value of plan assets, Ending balance	928		831
Defined Benefit Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] | Alternative Investments [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, Beginning balance	6,569		8,167
Transfers to other plan assets	(627)		(1,677)
Realized gains (losses)	186		526
Change in net unrealized gains (losses)	(414)		(447)
Fair value of plan assets, Ending balance	$ 5,714		$ 6,569