CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - shares shares in Thousands	12 Months Ended
May. 02, 2015	May. 03, 2014	Apr. 27, 2013
Common stock options exercised, shares	83	66	279
Treasury stock acquired, shares	477	286	356

Number of share options (or share units) exercised during the current period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Name:	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration