Inventories - Textuals (Details) - USD ($) $ in Millions	Apr. 30, 2020	Jan. 31, 2020	Apr. 30, 2019
Inventory [Line Items]
Inventory held on consignment	$ 6.6	$ 9.1	$ 3.8
Prepaid Expenses and Other Current Assets
Inventory [Line Items]
Inventory return asset	$ 21.3	$ 31.0	$ 35.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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