Reportable Segments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Segment Reporting Information [Line Items]
Net sales		$ 2,186.0	$ 2,229.2	$ 6,582.3	$ 5,973.0
Segment profit		541.0	539.8	1,649.7	1,390.2
Amortization		(53.9)	(55.7)	(165.7)	(135.1)
Goodwill impairment charge		(794.3)	0.0	(794.3)	0.0
Other intangible assets impairment charge		(208.2)	0.0	(208.2)	0.0
Loss (gain) on divestitures – net		(50.2)	(0.3)	(311.0)	(12.9)
Interest expense – net		(95.4)	(99.8)	(294.5)	(167.0)
Change in net cumulative unallocated derivative gains and losses		60.0	(5.2)	41.7	(21.1)
Costs of products sold – special project costs		(1.1)	0.0	(11.7)	0.0
Other special project costs		(10.1)	(98.9)	(27.9)	(105.7)
Other debt gains (charges) – net		30.3	0.0	30.3	(19.5)
Corporate administrative expenses		(77.2)	(82.3)	(247.4)	(215.6)
Other income (expense) – net		(3.4)	(2.1)	(10.7)	(30.0)
Income (Loss) Before Income Taxes		(662.5)	195.5	(349.7)	683.3
U.S. Retail Coffee
Segment Reporting Information [Line Items]
Net sales		740.6	727.5	2,068.0	2,038.3
Segment profit		208.6	207.8	583.9	548.9
Goodwill impairment charge				0.0
U.S. Retail Frozen Handheld and Spreads
Segment Reporting Information [Line Items]
Net sales		445.2	436.8	1,427.2	1,365.1
Segment profit		99.2	104.1	334.3	338.3
Goodwill impairment charge				0.0
U.S. Retail Pet Foods
Segment Reporting Information [Line Items]
Net sales		423.0	465.2	1,268.1	1,370.2
Segment profit		116.8	109.5	353.5	288.0
Goodwill impairment charge				0.0
Sweet Baked Snacks
Segment Reporting Information [Line Items]
Net sales		278.6	300.3	927.8	300.3
Segment profit		54.8	68.0	199.8	68.0
Goodwill impairment charge	[1]			(794.3)
International and Away From Home
Segment Reporting Information [Line Items]
Net sales		298.6	299.4	891.2	899.1
Segment profit		$ 61.6	$ 50.4	178.2	$ 147.0
Goodwill impairment charge				$ 0.0

[1] We have recognized accumulated goodwill impairment charges of $1,037.2 as of January 31, 2025.