v3.25.2
Pension Plans - Pension Plan Assets Categorized Using Fair Value Hierarchy (Detail) - Pension Benefits - USD ($)
$ in Thousands
May 31, 2025
May 31, 2024
May 31, 2023
U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets $ 770,703 $ 720,079 $ 631,486
U.S. Plans | U.S. Treasury and other government      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 57,763 53,751  
U.S. Plans | State and Municipal Debt Obligations      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 213 210  
U.S. Plans | Foreign Covered Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 3,365 2,480  
U.S. Plans | Mortgage-backed securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 17,964 14,922  
U.S. Plans | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 15,750 14,904  
U.S. Plans | Large Cap Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 51,743 44,392  
U.S. Plans | Equity Mutual Funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 377,516 354,599  
U.S. Plans | Mutal Funds - Multi-class      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 155,782 141,183  
U.S. Plans | Debt Mutual Funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 2,900 2,317  
U.S. Plans | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 19,327 28,523  
U.S. Plans | Limited Partner      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets   74  
U.S. Plans | Futures contracts      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 64 120  
U.S. Plans | Investments Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 68,316 [1] 62,604 [2]  
Non-U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 188,984 174,260 166,120
Non-U.S. Plans | Foreign Covered Bonds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 1,050 1,066  
Non-U.S. Plans | Cash and Cash Equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 476 175  
Non-U.S. Plans | Pooled Equity Securities Funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 66,101 60,455  
Non-U.S. Plans | Pooled Funds Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 82,844 81,798  
Non-U.S. Plans | Insurance Contracts      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 28,121 20,283  
Non-U.S. Plans | Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 10,392 10,483  
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 71,070 72,915  
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 51,743 44,392  
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 19,327 28,523  
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 476 175  
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 476 175  
Significant Other Observable Inputs (Level 2) | U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 631,253 584,366  
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 57,763 53,751  
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 213 210  
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 3,365 2,480  
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 17,964 14,922  
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 15,750 14,904  
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 377,516 354,599  
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 155,782 141,183  
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 2,900 2,317  
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 160,387 153,802  
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 1,050 1,066  
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 66,101 60,455  
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 82,844 81,798  
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 10,392 10,483  
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 28,185 20,477 $ 19,418
Significant Unobservable Inputs (Level 3) | U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 64 194  
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  
Significant Unobservable Inputs (Level 3) | U.S. Plans | Futures contracts      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 64 120  
Significant Unobservable Inputs (Level 3) | Non-U.S. Plans      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Pension plans with Plan Assets 28,121 20,283  
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 $ 28,121 $ 20,283  
[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.
[2] 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.