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Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Jul. 31, 2022 | Jul. 31, 2021 | Jan. 31, 2022
Property Plant And Equipment [Line Items] |  |  |  |  |
Accumulated depreciation of property and equipment acquired under finance lease | $ 219.1 |  | $ 219.1 |  | $ 196.6
Depreciation expense | 14.0 | $ 16.1 | 28.8 | $ 32.4 |
Servers and related equipment |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |
Gross amount of property and equipment acquired under finance lease | $ 259.5 |  | $ 259.5 |  |
Servers And Related Equipment And Construction In Progress |  |  |  |  |
Property Plant And Equipment [Line Items] |  |  |  |  |
Gross amount of property and equipment acquired under finance lease |  |  |  |  | $ 258.8

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition 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. + References No definition available. + Details
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