Reportable Segments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Net sales:
Net sales		$ 2,076.7	$ 1,972.3	$ 6,082.5	$ 5,709.0
Segment profit:
Segment profit		481.2	468.7	1,453.3	1,292.3
Amortization		(57.0)	(58.8)	(176.1)	(176.4)
Other intangible assets impairment charge		0.0	(52.4)	0.0	(52.4)
Gain (loss) on divestitures - net		27.2	0.0	27.2	0.0
Interest expense – net		(43.5)	(45.1)	(134.7)	(143.6)
Unallocated derivative gains (losses)		33.8	7.7	81.5	37.6
Other special project costs (A)	[1]	(1.7)	(3.3)	(1.7)	(9.9)
Corporate administrative expenses		(77.3)	(72.9)	(236.1)	(214.8)
Other income (expense) – net		(1.2)	(1.4)	(34.8)	(4.5)
Income Before Income Taxes		361.5	242.5	978.6	728.3
U.S. Retail Pet Foods [Member]
Net sales:
Net sales		768.6	721.9	2,169.9	2,101.7
Segment profit:
Segment profit		135.1	146.0	385.3	403.1
U.S. Retail Coffee [Member]
Net sales:
Net sales		625.9	558.8	1,791.5	1,567.9
Segment profit:
Segment profit		210.7	189.5	595.4	500.9
U.S. Retail Consumer Foods [Member]
Net sales:
Net sales		447.6	422.9	1,415.9	1,251.2
Segment profit:
Segment profit		110.9	84.2	377.7	256.6
International and Away From Home
Net sales:
Net sales		234.6	268.7	705.2	788.2
Segment profit:
Segment profit		$ 24.5	$ 49.0	$ 94.9	$ 131.7

[1] Other special project costs includes integration and restructuring costs. For more information, see Note 3: Integration and Restructuring Costs.