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Significant Accounting Policies - Narrative - Financial Reporting Periods (Details)	12 Months Ended
	Apr. 30, 2016	May 02, 2015	May 03, 2014
Financial Reporting Periods [Line Items]
Fiscal year duration	fifty-two weeks	fifty-two weeks	53
Minimum
Financial Reporting Periods [Line Items]
Fiscal year duration	fifty-two weeks
Maximum
Financial Reporting Periods [Line Items]
Fiscal year duration	fifty-three weeks

X

- Definition

[Line Items] for Financial Reporting Periods [Table]

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- Definition

Fiscal Year Duration

+ References

No definition available.

+ Details

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Period Type:	duration

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X

- Details

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