v3.26.1
Long-Term Financing (Schedule of Long-Term Debt, at Amortized Cost) (Details) - USD ($)
$ in Millions
May 31, 2026
May 31, 2025
Debt Instrument [Line Items]    
Total long-term debt $ 4,600.0 $ 5,000.0
Less: current portion, net of debt issuance costs 0.0 (399.8)
Less: unamortized discount and debt issuance costs (43.9) (51.8)
Long-term debt, net $ 4,556.1 4,548.4
Senior Notes, Series A [Member] | Senior Notes [Member]    
Debt Instrument [Line Items]    
Effective interest rate 4.12%  
Total long-term debt $ 0.0 400.0
Senior Notes, Series B [Member] | Senior Notes [Member]    
Debt Instrument [Line Items]    
Effective interest rate 4.30%  
Total long-term debt $ 400.0 400.0
5-Year Fixed Rate Corporate Bonds [Member] | Corporate Bonds [Member]    
Debt Instrument [Line Items]    
Effective interest rate 5.35%  
Total long-term debt $ 1,500.0 1,500.0
7-Year Fixed Rate Corporate Bonds [Member] | Corporate Bonds [Member]    
Debt Instrument [Line Items]    
Effective interest rate 5.57%  
Total long-term debt $ 1,500.0 1,500.0
10-Year Fixed Rate Corporate Bonds [Member] | Corporate Bonds [Member]    
Debt Instrument [Line Items]    
Effective interest rate 5.84%  
Total long-term debt $ 1,200.0 $ 1,200.0