Pension Plan Assets Categorized Using Fair Value Hierarchy (Detail) - Pension Benefits - USD ($) $ in Thousands		May 31, 2024	May 31, 2023	May 31, 2022
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		$ 720,079	$ 631,486	$ 616,960
U.S. Plans | U.S. Treasury and other government
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		53,751	49,297
U.S. Plans | State and Municipal Debt Obligations
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		210	450
U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		2,480	690
U.S. Plans | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		14,922	8,515
U.S. Plans | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		14,904	17,376
U.S. Plans | Large Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		44,392	35,467
U.S. Plans | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		354,599	304,590
U.S. Plans | Mutal Funds - Multi-class
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		141,183	125,345
U.S. Plans | Debt Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		2,317	2,553
U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		28,523	36,573
U.S. Plans | Limited Partner
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		74	170
U.S. Plans | Futures contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		120	112
U.S. Plans | Investments Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	[1]	62,604	50,348
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		174,260	166,120	193,375
Non-U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		1,066	774
Non-U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		175	146
Non-U.S. Plans | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		60,455	61,827
Non-U.S. Plans | Pooled Funds Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		81,798	80,650
Non-U.S. Plans | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		20,283	19,136
Non-U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		10,483	3,587
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		72,915	72,040
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Large Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		44,392	35,467
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		28,523	36,573
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		175	146
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		175	146
Significant Other Observable Inputs (Level 2) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		584,366	508,816
Significant Other Observable Inputs (Level 2) | U.S. Plans | U.S. Treasury and other government
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		53,751	49,297
Significant Other Observable Inputs (Level 2) | U.S. Plans | State and Municipal Debt Obligations
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		210	450
Significant Other Observable Inputs (Level 2) | U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		2,480	690
Significant Other Observable Inputs (Level 2) | U.S. Plans | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		14,922	8,515
Significant Other Observable Inputs (Level 2) | U.S. Plans | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		14,904	17,376
Significant Other Observable Inputs (Level 2) | U.S. Plans | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		354,599	304,590
Significant Other Observable Inputs (Level 2) | U.S. Plans | Mutal Funds - Multi-class
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		141,183	125,345
Significant Other Observable Inputs (Level 2) | U.S. Plans | Debt Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		2,317	2,553
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		153,802	146,838
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		1,066	774
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		60,455	61,827
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Pooled Funds Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		81,798	80,650
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		10,483	3,587
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		20,477	19,418	$ 23,179
Significant Unobservable Inputs (Level 3) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		194	282
Significant Unobservable Inputs (Level 3) | U.S. Plans | Limited Partner
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		74	170
Significant Unobservable Inputs (Level 3) | U.S. Plans | Futures contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		120	112
Significant Unobservable Inputs (Level 3) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		20,283	19,136
Significant Unobservable Inputs (Level 3) | Non-U.S. Plans | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		$ 20,283	$ 19,136

[1] In accordance with Subtopic 820-10, Fair Value Measurements and Disclosures, certain investments that are measured at fair value using the net asset value ("NAV") per share practical expedient have not been classified in the fair value hierarchy. The investments that are measured at fair value using NAV per share included in the table above are intended to permit reconciliation of the fair value hierarchy to the fair value of the plan assets at the end of each period.