Acquisitions \|Adjustments to Estimated Purchase Price Allocation (Details) - TS $ in Millions	6 Months Ended
Oct. 31, 2017 USD ($)
Adjustments to Purchase Price Allocation [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 116
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	94
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets	11
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities	$ 9

[Line Items] for Adjustments to Purchase Price Allocation [Table]

No definition available.

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- Definition

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Assets

+ References

No definition available.

+ Details

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- Definition

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities

+ References

No definition available.

+ Details

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4A
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=SL65897772-128472

+ Details

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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