Derivative Financial Instruments (Details 1) - USD ($) $ in Millions	Apr. 30, 2025	Apr. 30, 2024
Other Current Assets
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	$ 82.3	$ 37.7
Other Current Liabilities
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	20.2	9.4
Other Noncurrent Assets
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	0.0	0.0
Other Noncurrent Liabilities
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	0.0	0.1
Commodity contracts | Other Current Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	81.5	35.8
Commodity contracts | Other Current Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	18.7	9.3
Commodity contracts | Other Noncurrent Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	0.0	0.0
Commodity contracts | Other Noncurrent Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	0.0	0.1
Foreign currency exchange contracts | Other Current Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	0.8	1.9
Foreign currency exchange contracts | Other Current Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	1.5	0.1
Foreign currency exchange contracts | Other Noncurrent Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	0.0	0.0
Foreign currency exchange contracts | Other Noncurrent Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	$ 0.0	$ 0.0