Divestitures (Details Textual) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended	15 Months Ended
	Feb. 08, 2023 USD ($) numberOfEmployees shares	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($) numberOfEmployees	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($) numberOfEmployees	Apr. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Dec. 01, 2021 numberOfEmployees
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from divestitures - net				$ 1.6	$ 130.2
Gain on divestitures – net		$ 0.0	$ 9.6	1.6	$ 9.6
Natural Beverage and Grains Businesses [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Number of Employees | numberOfEmployees			150		150
Cash proceeds from divestitures - net							$ 98.7
Gain on divestitures – net				$ 1.6		$ 26.7	$ 28.3
Natural Beverage and Grains Businesses [Member] | U.S. Retail Consumer Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Annual net sales						106.7
Private Label Dry Pet Food Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Number of Employees | numberOfEmployees								220
Cash proceeds from divestitures - net						32.9
Gain on divestitures – net						(17.1)
Private Label Dry Pet Food Business [Member] | U.S. Retail Pet Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Annual net sales						$ 62.3
Subsequent Event | Pet Food Brands [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Number of Employees | numberOfEmployees	1,100
Subsequent Event | Pet Food Brands [Member] | Forecast [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total proceeds from divestitures - cash and equity	$ 1,200.0
Cash proceeds from divestitures - net	$ 700.0
Proceeds from divestitures - equity | shares	5,390
Gain on divestitures – net	$ (815.0)
Subsequent Event | Pet Food Brands [Member] | U.S. Retail Pet Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Annual net sales	$ 1,500.0