XML 91 R60.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Taxes - Differences Between Income Tax Expense at Federal Income Tax Rate and Effective Income Tax Rate (Detail)
3 Months Ended 12 Months Ended
Apr. 27, 2014
Jan. 26, 2014
Oct. 27, 2013
Jul. 28, 2013
Apr. 28, 2013
Jan. 27, 2013
Oct. 28, 2012
Jul. 29, 2012
Apr. 27, 2014
Apr. 28, 2013
Apr. 29, 2012
Income Tax Disclosure [Abstract]                      
federal income tax rate                 34.00% 34.00% 34.00%
foreign tax rate differential                 (7.20%) (6.70%) (8.80%)
increase in tax reserves                 4.30% 4.00% 6.10%
undistributed earnings from foreign subsidiaries                 (26.30%) 34.60%  
change in valuation allowance                 0.10% (58.30%) (26.10%)
other                 3.50% 2.10% 1.20%
effective income tax rate 33.50% (83.20%) 35.70% 41.60% 36.90% 37.60% (82.40%) 34.40% 8.40% 9.70% 6.40%