Divestiture (Details) - Crisco Business [Member] $ in Millions	3 Months Ended	12 Months Ended
	Jan. 31, 2021 USD ($)	Apr. 30, 2020 USD ($)	Oct. 31, 2020 USD ($) Position
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Number of Employees | Position			160
Inventories			$ 37.9
Property, plant, and equipment			36.9
Operating lease right-of-use assets			1.6
Goodwill			227.6
Other intangible assets - net			117.5
Other noncurrent assets			0.1
Total assets held for sale			421.6
Current operating lease liabilities			0.6
Noncurrent operating lease liabilities			1.0
Total liabilities held for sale			1.6
Net assets held for sale			$ 420.0
Annual net sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Annual net sales		$ 270.0
Forecast [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture	$ 550.0
Gain on divestiture	$ 115.0