General (Details) $ in Millions	3 Months Ended
	Apr. 30, 2022 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Exit charges	$ 20.7
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total exit costs expected	30.0
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total exit costs expected	40.0
Cost of sales
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Exit charges	17.4
Selling, general and administrative expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Exit charges	$ 3.3