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Income Taxes (Tables)
6 Months Ended
Nov. 01, 2015
Income Tax Disclosure [Abstract]  
Summary of Differences in Income Tax Expense at Federal Income Tax Rate and Effective Income Tax Rate
The following schedule summarizes the principal differences between income tax expense at the federal income tax rate and the effective income tax rate reflected in the consolidated financial statements:
   
2016
 
2015
federal income tax rate
    34.0 %     34.0 %
foreign tax rate differential
    (4.9 )     (5.6 )
undistributed earnings from foreign subsidiaries
    4.5       3.7  
increase in liability for uncertain tax positions
    3.1       4.1  
other
    0.8       2.5  
      37.5 %     38.7 %