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Revenue Recognition - Other Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2023 | Oct. 31, 2022 | Jan. 31, 2023
Capitalized Contract Cost [Line Items] |  |  |  |  |
Amortization period (in years) | 5 years |  | 5 years |  |
Capitalized costs to obtain customer contracts | $ 117.6 |  | $ 117.6 |  | $ 113.5
Amortization of costs to obtain customer contracts | 12.2 | $ 11.3 | 36.4 | $ 33.5 |
Revenue recognized previously included in deferred revenue balance | 149.5 | $ 131.0 | 296.0 | $ 250.6 |
Contract assets | 3.8 |  | 3.8 |  | 4.8
Prepaid expenses and other current assets |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Capitalized costs to obtain customer contracts | 40.8 |  | 40.8 |  | 44.1
Other noncurrent assets |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Capitalized costs to obtain customer contracts | $ 76.8 |  | $ 76.8 |  | $ 69.4

X
- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -SubTopic 40 -Topic 340 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-2 + Details
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