v3.20.1

Business combination - Acquired Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 7,659	$ 1,195
In-process software development costs
Acquired Finite-Lived Intangible Assets [Line Items]
In-process software development costs	3,800
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 598,500
Weighted-average remaining amortization period (years)	15 years
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 96,900
Weighted-average remaining amortization period (years)	4 years 6 months
Trade names & trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 12,300
Weighted-average remaining amortization period (years)	3 years
Identified intangible assets subject to amortization
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 707,700
Weighted-average remaining amortization period (years)	13 years 4 months 24 days
WageWorks, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Total acquired intangible assets	$ 711,500

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- Definition

Finite lived Intangible and Indefinite lived Intangible Assets Acquired

+ References

No definition available.

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- Definition

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+ References

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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