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Recently Issued Accounting Standards (Details) - USD ($) $ in Millions | Jan. 31, 2020 | May 01, 2019 | Apr. 30, 2019
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Operating lease right-of-use assets | $ 168.0 |  | $ 0.0
Total operating lease liabilities | 175.2 |  |
Accounting Standards Update 2016-02 [Member] |  |  |
Operating lease right-of-use assets |  | $ 159.2 |
Total operating lease liabilities |  | $ 166.6 |
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2018-15 [Member] | Other Noncurrent Assets [Member] |  |  |
Capitalized third-party cloud computing implementation costs | $ 3.4 |  |

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- Definition Amount, before accumulated amortization, of capitalized implementation cost from hosting arrangement that is service contract + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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