General - Computation of Basic and Diluted Earnings Per Share (EPS) (Detail) - shares shares in Thousands	3 Months Ended
Jul. 27, 2019	Jul. 28, 2018
Earnings Per Share [Abstract]
Denominator for basic earnings per share – weighted average shares (in shares)	93,795	92,529
Effect of dilutive securities - stock options, restricted stock and stock purchase plans (in shares)	828	0
Denominator for diluted earnings per share – weighted average shares (in shares)	94,623	92,529

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 260
-SubTopic 10
-Section 45
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