Segments (Details) $ in Millions	6 Months Ended
	Jul. 31, 2020 USD ($) segment	Jan. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	1
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 594.0	$ 600.5
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	461.6	467.4
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	430.3	434.2
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	31.3	33.2
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	82.4	75.8
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 50.0	$ 57.3