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Acquisition -Summary of Net Assets Acquired (Parenthetical) (Detail) - Acquired Companies - USD ($) $ in Millions	Nov. 01, 2019	Jan. 31, 2020
Business Acquisition [Line Items]
Acquired receivables	$ 41.1
Tax deductible goodwill from acquisition		$ 37.1
Intellectual Property
Business Acquisition [Line Items]
Intangibles assets	$ 36.0
Weighted average useful life	7 years
Customer Relationships
Business Acquisition [Line Items]
Intangibles assets	$ 6.2
Weighted average useful life	10 years
Trade Names
Business Acquisition [Line Items]
Intangibles assets	$ 3.2
Weighted average useful life	9 years

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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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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.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

+ References

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-SubTopic 20
-Section 50
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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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