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Recently Issued Accounting Standards (Details) - USD ($) $ in Millions	Jan. 31, 2020	May 01, 2019	Apr. 30, 2019
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

X

- 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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X

- 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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X

- 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

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