v3.26.1
Debt and Financing Arrangements (Details) - USD ($)
$ in Millions
Jul. 31, 2026
Apr. 30, 2026
Long-term debt    
Debt instrument face amount $ 6,603.2 $ 6,603.2
Total long-term debt [1] 6,544.3 6,542.8
Long-term debt, less current portion [1] $ 6,394.3 $ 6,392.8
3.38% Senior Notes due December 15, 2027    
Long-term debt    
Interest rate on notes 3.38% 3.38%
Debt instrument face amount $ 500.0 $ 500.0
Senior Notes [1] $ 499.5 $ 499.3
5.90% Senior Notes due November 15, 2028    
Long-term debt    
Interest rate on notes 5.90% 5.90%
Debt instrument face amount $ 750.0 $ 750.0
Senior Notes [1] $ 747.2 $ 746.9
2.38 % Senior Notes due March 15, 2030    
Long-term debt    
Interest rate on notes 2.38% 2.38%
Debt instrument face amount $ 500.0 $ 500.0
Senior Notes [1] $ 498.3 $ 498.1
2.13% Senior Notes due March 15, 2032    
Long-term debt    
Interest rate on notes 2.13% 2.13%
Debt instrument face amount $ 364.5 $ 364.5
Senior Notes [1] $ 361.9 $ 361.8
6.20% Senior Notes due November 15, 2033    
Long-term debt    
Interest rate on notes 6.20% 6.20%
Debt instrument face amount $ 1,000.0 $ 1,000.0
Senior Notes [1] $ 993.5 $ 993.3
4.25% Senior Notes due March 15, 2035    
Long-term debt    
Interest rate on notes 4.25% 4.25%
Debt instrument face amount $ 650.0 $ 650.0
Senior Notes [1] $ 646.4 $ 646.3
2.75% Senior Notes due September 15, 2041    
Long-term debt    
Interest rate on notes 2.75% 2.75%
Debt instrument face amount $ 177.5 $ 177.5
Senior Notes [1] $ 176.2 $ 176.2
6.50% Senior Notes due November 15, 2043    
Long-term debt    
Interest rate on notes 6.50% 6.50%
Debt instrument face amount $ 750.0 $ 750.0
Senior Notes [1] $ 738.0 $ 737.9
4.38% Senior Notes due March 15, 2045    
Long-term debt    
Interest rate on notes 4.38% 4.38%
Debt instrument face amount $ 600.0 $ 600.0
Senior Notes [1] $ 589.9 $ 589.8
3.55% Senior Notes due March 15, 2050    
Long-term debt    
Interest rate on notes 3.55% 3.55%
Debt instrument face amount $ 161.2 $ 161.2
Senior Notes [1] $ 159.4 $ 159.4
6.50% Senior Notes due November 15, 2053    
Long-term debt    
Interest rate on notes 6.50% 6.50%
Debt instrument face amount $ 1,000.0 $ 1,000.0
Senior Notes [1] 984.0 983.8
Term Loan Credit Agreement due 2027    
Long-term debt    
Debt instrument face amount 150.0 150.0
Senior Notes [1] 150.0 150.0
Current Portion Of Long Term Debt    
Long-term debt    
Debt instrument face amount 150.0 150.0
Total Long Term Debt Less Current Portion    
Long-term debt    
Debt instrument face amount $ 6,453.2 $ 6,453.2
[1] Represents the carrying amount included in the Condensed Consolidated Balance Sheets, which includes the impact of capitalized debt issuance costs, offering discounts, and terminated interest rate contracts.