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Selected Quarterly Financial Data (Unaudited) - Footnote Disclosure (Details) $ / shares in Units, $ in Millions | 3 Months Ended
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Apr. 30, 2020 USD ($) $ / shares
Quarterly Financial Information Disclosure [Abstract] |
Goodwill and intangible asset impairment | $ 172.8
Goodwill and intangible asset impairment, after tax | $ 170.6
Goodwill and intangible asset impairment (usd per share) | $ / shares | $ 2.54

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- Definition Asset Impairment Charge, Per Share, Diluted + References No definition available. + Details
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- Definition Asset Impairment Charges, after Tax + References No definition available. + Details
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
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- References No definition available. + Details
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