Reportable Segments (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Net sales:
Net sales		$ 2,205.1	$ 2,050.0	$ 4,078.1	$ 3,908.0
Segment profit:
Segment profit		449.6	458.8	787.2	841.6
Amortization		(55.6)	(55.4)	(111.2)	(110.8)
Gain on divestiture		0.0	0.0	1.6	0.0
Interest expense – net		(39.7)	(40.3)	(78.8)	(83.4)
Change in net cumulative unallocated derivative gains and losses		(27.1)	(13.3)	(60.9)	(15.5)
Costs of products sold - special project costs	[1]	(2.8)	(6.1)	(3.9)	(10.7)
Other special project costs	[1],[2]	(0.7)	(1.3)	(2.1)	(3.1)
Corporate administrative expenses		(70.0)	(70.9)	(137.6)	(130.3)
Other income (expense) – net		(0.8)	(2.7)	(0.3)	(13.8)
Income Before Income Taxes		252.9	268.8	394.0	474.0
U.S. Retail Pet Foods [Member]
Net sales:
Net sales		765.2	701.6	1,494.2	1,349.6
Segment profit:
Segment profit		120.1	99.6	240.4	179.5
U.S. Retail Coffee [Member]
Net sales:
Net sales		709.8	645.1	1,307.7	1,188.3
Segment profit:
Segment profit		187.7	207.8	333.6	359.1
U.S. Retail Consumer Foods [Member]
Net sales:
Net sales		432.2	441.2	743.3	876.8
Segment profit:
Segment profit		100.3	111.0	155.1	229.7
International and Away From Home
Net sales:
Net sales		297.9	262.1	532.9	493.3
Segment profit:
Segment profit		$ 41.5	$ 40.4	$ 58.1	$ 73.3

[1] Special project costs include certain restructuring costs, which are recognized in cost of products sold and other special project costs in the Condensed Statements of Consolidated Income. For more information, see Note 3: Restructuring Costs.

[2] Special project costs include certain restructuring costs, which are recognized in cost of products sold and other special project costs. For more information, see Note 3: Restructuring Costs and Note 5: Reportable Segments.