Commitments and Contingencies - Narrative (Details)	6 Months Ended
Jul. 31, 2020
Minimum
Other Commitments [Line Items]
Income tax examination, period	three
Maximum
Other Commitments [Line Items]
Income tax examination, period	four years

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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Balance Type:	na
Period Type:	duration