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v3.19.3.a.u2

Summary of Significant Accounting Policies Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018 | Sep. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Other Accrued Liabilities |  | $ 14,800,000 |  |  |
Share Price | $ 128.05 |  |  |  |
Payment terms for deferred revenue | 30 days |  |  |  |
Amortization period for capitalized contract costs | 5 years |  |  |  |
Commissions capitalized as contract costs | $ 61,300,000 | 41,300,000 |  |  |
Amortization of contract costs | 28,600,000 | 20,900,000 |  | $ 15,200,000 |
Impairment loss related to costs capitalized | 0 | 0 |  |  |
Noncurrent portion of restricted cash | 11,400,000 |  |  |  |
Advertising expenses | 17,000,000.0 | 10,000,000.0 |  | $ 9,400,000 |
Operating lease right-of-use assets | 125,204,000 | $ 121,389,000 | [1] |  |
Operating lease liability | $ 166,575,000 |  |  |  |
ESPP |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Expected dividend yield | 0.00% | 0.00% |  | 0.00% |
Capitalized internal-use software costs |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Intangible asset, useful life | 3 years |  |  |  |
Minimum |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Contract duration | 1 year |  |  |  |
Maximum |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Contract duration | 5 years |  |  |  |
Senior Notes | Convertible Senior Notes Due 2025 |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Aggregate principal amount | $ 1,060,000,000.0 |  |  |  |
Fixed interest rate |  |  |  |  | 0.125%
[1] | Adjusted for adoption of ASC 842. See Note 2.

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