Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022
Property Plant And Equipment [Line Items]
Accumulated depreciation of property and equipment acquired under finance lease	$ 222.7		$ 222.7		$ 196.6
Depreciation expense	13.3	$ 16.3	42.1	$ 48.7
Data center equipment
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease	$ 253.1		$ 253.1
Data Center Equipment and Construction in Progress
Property Plant And Equipment [Line Items]
Gross amount of property and equipment acquired under finance lease					$ 258.8