Income Taxes (Details 3) - USD ($) $ in Millions	Apr. 30, 2022	Apr. 30, 2021
Deferred tax liabilities:
Intangible assets	$ 1,303.5	$ 1,347.4
Property, plant, and equipment	174.7	187.9
Leases	21.8	27.4
Other	19.2	16.2
Total deferred tax liabilities	1,519.2	1,578.9
Deferred tax assets:
Post-employment and other employee benefits	66.2	103.6
Tax credit and loss carryforwards	27.8	28.3
Intangible assets	15.9	17.1
Hedging transactions	47.6	43.4
Leases	23.5	29.4
Other	42.3	38.5
Total deferred tax assets	223.3	260.3
Valuation allowance	(29.9)	(30.7)
Total deferred tax assets, less allowance	193.4	229.6
Net deferred tax liability	$ 1,325.8	$ 1,349.3