Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Goodwill [Line Items]
Goodwill, Beginning Balance				$ 7,649.9
Goodwill impairment charge		$ (794.3)	$ 0.0	(794.3)	$ 0.0
Divestitures				(277.4)
Other				(8.5)
Goodwill, Ending Balance		6,569.7		6,569.7
Goodwill, Impaired, Accumulated Impairment Loss		1,037.2		1,037.2
U.S. Retail Coffee
Goodwill [Line Items]
Goodwill, Beginning Balance				2,090.9
Goodwill impairment charge				0.0
Divestitures				0.0
Other				0.0
Goodwill, Ending Balance		2,090.9		2,090.9
U.S. Retail Frozen Handheld and Spreads
Goodwill [Line Items]
Goodwill, Beginning Balance				1,139.9
Goodwill impairment charge				0.0
Divestitures				0.0
Other				0.0
Goodwill, Ending Balance		1,139.9		1,139.9
U.S. Retail Pet Foods
Goodwill [Line Items]
Goodwill, Beginning Balance				1,580.2
Goodwill impairment charge				0.0
Divestitures				0.0
Other				0.0
Goodwill, Ending Balance		1,580.2		1,580.2
Sweet Baked Snacks
Goodwill [Line Items]
Goodwill, Beginning Balance				2,447.2
Goodwill impairment charge	[1]			(794.3)
Divestitures				(277.4)
Other	[2]			(0.4)
Goodwill, Ending Balance		1,375.1		1,375.1
International and Away From Home
Goodwill [Line Items]
Goodwill, Beginning Balance				391.7
Goodwill impairment charge				0.0
Divestitures				0.0
Other	[3]			(8.1)
Goodwill, Ending Balance		$ 383.6		$ 383.6

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

[2] The amount classified as other in the Sweet Baked Snacks segment represents purchase accounting adjustments for the acquisition of Hostess Brands.

[3] The amount classified as other in the International and Away From Home segment represents foreign currency translation adjustments.