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Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jan. 31, 2021	Jan. 31, 2021	Apr. 30, 2020
ROU Assets and Lease Liabilities [Abstract]
Operating lease right-of-use assets	$ 125,287	$ 125,287	$ 142,716
Short-term portion of operating lease liabilities	20,965	20,965	21,810
Operating lease liabilities, non-current	153,031	153,031	$ 159,782
Increase (decrease) in ROU assets due to new leases as well as modifications and remeasurements to existing operating leases		6,200
Increase (decrease) in operating lease liabilities due to new leases as well as modifications and remeasurements to existing operating leases		$ 6,100
Business Optimization Program [Member]
ROU Assets and Lease Liabilities [Abstract]
Restructuring charges	$ 18,300

X

- Definition

The increase (decrease) during the reporting period in the aggregate amount of lease liabilities.

+ References

No definition available.

+ Details

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X

- Definition

The increase (decrease) during the reporting period in the aggregate amount of right of use assets.

+ References

No definition available.

+ Details

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X

- References

No definition available.

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ 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=121603541&loc=SL77918627-209977

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ 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=121603541&loc=SL77918627-209977

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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=121603541&loc=SL77918627-209977

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X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747

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-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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