Derivative Financial Instruments (Details 1) - USD ($) $ in Millions	Apr. 30, 2024	Apr. 30, 2023
Other Current Assets
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	$ 37.7	$ 19.5
Other Current Liabilities
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	9.4	14.8
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	0.1	0.0
Commodity contracts | Other Current Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	35.8	18.1
Commodity contracts | Other Current Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	9.3	14.7
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	0.1	0.0
Foreign currency exchange contracts | Other Current Assets | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Assets	1.9	1.4
Foreign currency exchange contracts | Other Current Liabilities | Not designated as hedging instruments
Fair value of derivative instruments [Line Items]
Derivatives Instruments, Liabilities	0.1	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