v3.25.2
Borrowings - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Apr. 30, 2025
Nov. 30, 2018
Dec. 20, 2017
May 09, 2014
Aug. 31, 2022
May 31, 2025
May 31, 2024
Jan. 25, 2022
Feb. 27, 2019
Mar. 31, 2017
Mar. 02, 2017
May 29, 2015
Debt Instrument [Line Items]                        
Maturities of long-term debt in 2026           $ 8,900,000            
Maturities of long-term debt in 2027           406,100,000            
Maturities of long-term debt in 2028           982,700,000            
Maturities of long-term debt in 2029           352,500,000            
Maturities of long-term debt in 2030           1,900,000            
Maturities of long-term debt thereafter           910,900,000            
Credit facility, available liquidity           667,000,000            
Liquidity available           $ 969,100,000            
Consolidated indebtedness           47.80% 45.90%          
Issuance of Debt                        
Debt Instrument [Line Items]                        
Covenant leverage ratio           4.25%            
Accounts Receivable Securitization Program with Two Banks, through May 19, 2025                        
Debt Instrument [Line Items]                        
Credit facility borrowing maximum capacity $ 300,000,000         $ 300,000,000            
Credit facility expiration date Apr. 30, 2028                      
Percentage of indirect economic interest held in SPE       100.00%                
Outstanding balance           $ 190,000,000            
Maturity date [1]           Apr. 30, 2028 Apr. 30, 2028          
Unsecured 5.25% notes due June 1, 2045                        
Debt Instrument [Line Items]                        
Issuance of note                     $ 50,000,000 $ 250,000,000
Debt, interest rate           5.25% [1],[2] 5.25% [1],[2]       5.25% 5.25%
Debt instrument, effective interest rate           5.29%            
Note Interest payment frequency, term           Interest on the 2045 Notes is payable semiannually in arrears on June 1st and December 1st of each year at a rate of 5.25% per year            
Maturity date [1],[2]           Jun. 01, 2045 Jun. 01, 2045          
Unsecured 3.75% notes due March 15, 2027                        
Debt Instrument [Line Items]                        
Issuance of note                     $ 400,000,000  
Debt, interest rate           3.75% [1],[2] 3.75% [1],[2]       3.75%  
Debt instrument, effective interest rate           3.77%            
Note Interest payment frequency, term           Interest on the 2027 Notes is payable semiannually in arrears on March 15th and September 15th of each year, at a rate of 3.75% per year            
Maturity date [1],[2]           Mar. 15, 2027 Mar. 15, 2027          
2.950% Notes due 2032                        
Debt Instrument [Line Items]                        
Interest payment terms           Interest on the Notes accrues from January 25, 2022 and will be payable semiannually in arrears on January 15 and July 15 of each year, beginning July 15, 2022, at a rate of 2.95% per year. The effective interest rate on the notes, including the amortization of the discount, is 2.98%.            
Interest frequency of payment term           semiannually            
Issuance of note               $ 300,000,000        
Debt, interest rate               2.95%        
Debt instrument, effective interest rate           2.98%            
Maturity date           Jan. 15, 2032            
Unsecured 4.55% senior notes due March 1, 2029                        
Debt Instrument [Line Items]                        
Issuance of note                 $ 350,000,000      
Debt, interest rate           4.55% [1],[2] 4.55% [1],[2]   4.55%      
Debt instrument, effective interest rate           4.57%            
Note Interest payment frequency, term           Interest on the 2029 Notes accrues from February 27, 2019 and is payable semiannually in arrears on March 1st and September 1st of each year, beginning September 1, 2019, at a rate of 4.55% per year.            
Maturity date [1],[2]           Mar. 01, 2029 Mar. 01, 2029          
Unsecured 4.25% notes due January 15, 2048                        
Debt Instrument [Line Items]                        
Issuance of note     $ 300,000,000                  
Debt, interest rate     4.25%     4.25% [1],[2] 4.25% [1],[2]          
Debt instrument, effective interest rate           4.25%            
Note Interest payment frequency, term           Interest on the 2048 Notes accrues from December 20, 2017 and is payable semiannually in arrears on January 15th and July 15th of each year, beginning July 15, 2018, at a rate of 4.25% per year.            
Maturity date [1],[2]           Jan. 15, 2048 Jan. 15, 2048          
Unsecured 6.50% senior notes due February 15, 2018                        
Debt Instrument [Line Items]                        
Debt, interest rate     6.50%                  
Maturity date           Feb. 15, 2018            
Repayment of aggregate principal amount outstanding     $ 250,000,000                  
Additional Aggregate Principal | Unsecured 5.25% notes due June 1, 2045                        
Debt Instrument [Line Items]                        
Issuance of note                   $ 50,000,000   $ 250,000,000
Debt, interest rate                   4.84%   5.25%
Minimum | Issuance of Debt                        
Debt Instrument [Line Items]                        
Covenant leverage ratio           3.75%            
Interest coverage ratio           3.50%            
Minimum | Accounts Receivable Securitization Program with Two Banks, through May 19, 2025                        
Debt Instrument [Line Items]                        
Monthly unused commitment fee           0.30%            
Maximum                        
Debt Instrument [Line Items]                        
Acquisition aggregate consideration $ 106,900,000                      
Maximum | Accounts Receivable Securitization Program with Two Banks, through May 19, 2025                        
Debt Instrument [Line Items]                        
Monthly unused commitment fee           0.50%            
Margin | Minimum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate           85.00%            
Margin | Maximum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate           90.00%            
Revolving Credit Facility                        
Debt Instrument [Line Items]                        
Credit facility, available liquidity           $ 557,000,000            
Credit facility borrowing maximum capacity   $ 1,300,000,000     $ 1,350,000,000              
Credit facility expiration date   Oct. 31, 2023     Aug. 01, 2027              
Interest coverage ratio           13.47%            
Leverage ratio           1.86%            
Maturity date [1],[3]           Aug. 01, 2027 Aug. 01, 2027          
[1] The fiscal 2024 amounts herein were reclassified to conform with the current year presentation which shows unamortized debt issuance costs as separate line item. This presentation change did not have any impact on the previously reported debt balances.
[2] Net of bond discounts and premiums of $0.6 million and $0.4 million at May 31, 2025 and 2024, respectively.
[3] 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; 5.34% on GBP denominated debt, which is tied to the Sterling Overnight Index Average (SONIA); 4.15% on CAD denominated debt, which is tied to CORRA. 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.

Interest as of May 31, 2024 was 6.53% for the USD denominated swingline account, which is tied to SOFR; 5.05% on EUR denominated debt which is tied to ESTR; and 6.33% on GBP denominated debt, which is tied to the SONIA. The debt balances outstanding, excluding deferred financing fees, as of May 31, 2024 for the USD denominated swingline, EUR denominated revolver, and GBP denominated debt were as follows: $15.8 million, $299.4 million, and $29.5 million.