v3.26.1
Borrowings - Description of Long Term Debt (Parenthetical) (Detail) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2026
May 31, 2025
Feb. 27, 2019
Dec. 20, 2017
Mar. 31, 2017
Mar. 02, 2017
May 29, 2015
Debt Instrument [Line Items]              
Net of bond discounts and premiums $ 0.7 $ 0.6          
Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, due date [1] Feb. 27, 2031 Feb. 27, 2031          
Unsecured 3.75% notes due March 15, 2027              
Debt Instrument [Line Items]              
Debt, interest rate 3.75% [2] 3.75% [2]       3.75%  
Debt, due date [2] Mar. 15, 2027 Mar. 15, 2027          
Unsecured 4.55% senior notes due March 1, 2029              
Debt Instrument [Line Items]              
Debt, interest rate 4.55% [2] 4.55% [2] 4.55%        
Debt, due date [2] Mar. 01, 2029 Mar. 01, 2029          
Unsecured 2.95% notes due January 15, 2032              
Debt Instrument [Line Items]              
Debt, interest rate [2] 2.95% 2.95%          
Debt, due date [2] Jan. 15, 2032 Jan. 15, 2032          
Unsecured 5.25% notes due June 1, 2045              
Debt Instrument [Line Items]              
Debt, interest rate 5.25% [2] 5.25% [2]       5.25% 5.25%
Debt, due date [2] Jun. 01, 2045 Jun. 01, 2045          
Accounts Receivable Securitization Program with Two Banks, through April 30, 2028              
Debt Instrument [Line Items]              
Debt, due date Apr. 30, 2028 Apr. 30, 2028          
Other Borrowings              
Debt Instrument [Line Items]              
Debt, maturity year 2035 2035          
Unsecured 4.25% notes due January 15, 2048              
Debt Instrument [Line Items]              
Debt, interest rate 4.25% [2] 4.25% [2]   4.25%      
Debt, due date [2] Jan. 15, 2048 Jan. 15, 2048          
United States Dollar Denominated Swingline Account | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, interest rate 4.63% 5.53%          
Outstanding debt $ 7.2 $ 17.7          
United States Dollar Denominated Revolver | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, interest rate 4.63%            
Outstanding debt $ 55.0            
Euro Denominated Debt | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, interest rate 2.93% 3.31%          
Outstanding debt $ 163.3 $ 271.2          
GBP Denominated Debt | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, interest rate   5.34%          
Outstanding debt   $ 45.1          
CAD Denominated Debt | Revolving Credit Facility              
Debt Instrument [Line Items]              
Debt, interest rate 3.25%            
Outstanding debt $ 372.7 $ 455.1          
Additional Aggregate Principal | Unsecured 5.25% notes due June 1, 2045              
Debt Instrument [Line Items]              
Debt, interest rate         4.84%   5.25%
[1] Interest as of May 31, 2026 was 4.63% for the USD denominated swingline account and the revolver, which are tied to SOFR; 2.93% on EUR denominated debt which is tied to ESTR; 3.25% on CAD denominated debt, which is tied to CORRA. The debt balances outstanding, excluding deferred financing fees, as of May 31, 2026 for the USD denominated swingline, USD denominated revolver, EUR denominated revolver, and CAD denominated revolver were as follows: $7.2 million, $55.0 million, $163.3 million, and $372.7 million.

Interest as of May 31, 2025 was 5.53% for the USD denominated swingline account, which is tied to SOFR; 3.31% on EUR denominated debt which is tied to ESTR; and 5.34% on GBP denominated debt, which is tied to the Sterling Overnight Index Average (SONIA). The debt balances outstanding, excluding deferred financing fees, as of May 31, 2025 for the USD denominated swingline, EUR denominated revolver, GBP denominated revolver, and CAD denominated revolver were as follows: $17.7 million, $271.2 million, $45.1 million, and $455.1 million.
[2] Net of bond discounts and premiums of $0.7 million and $0.6 million at May 31, 2026 and 2025, respectively.