Income Taxes (Details 3) - USD ($) $ in Millions	Apr. 30, 2023	Apr. 30, 2022
Deferred tax liabilities:
Intangible assets	$ 1,119.9	$ 1,303.5
Property, plant, and equipment	192.0	174.7
Leases	15.6	21.8
Other	8.2	19.2
Total deferred tax liabilities	1,335.7	1,519.2
Deferred tax assets:
Post-employment and other employee benefits	75.1	66.2
Tax credit and loss carryforwards	26.1	27.8
Intangible assets	19.0	15.9
Hedging transactions	46.9	47.6
Leases	17.5	23.5
Other	38.2	42.3
Total deferred tax assets	222.8	223.3
Valuation allowance	(26.0)	(29.9)
Total deferred tax assets, less allowance	196.8	193.4
Net deferred tax liability	$ 1,138.9	$ 1,325.8