Segments (Details) $ in Millions	3 Months Ended
	Apr. 30, 2021 USD ($) segment	Jan. 31, 2021 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	1
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 598.8	$ 609.5
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	444.8	453.1
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	414.2	423.6
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	30.6	29.5
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	108.4	109.7
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 45.6	$ 46.7