v3.20.1

Summary of business and significant accounting policies - Intangible Assets (Details)	12 Months Ended
	Jan. 31, 2020
Computer Software And Capitalized Software Development Costs
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	3 years
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	3 years
Acquired HSA Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	15 years
Minimum | 401(k) Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	10 years
Minimum | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	2 years
Maximum | 401(k) Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	15 years
Maximum | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	5 years

X

- 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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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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