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Income Taxes - Deferred Income Taxes - Undistributed Earnings - Narrative (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 02, 2015
Aug. 03, 2014
May. 03, 2015
Income Tax Disclosure [Abstract]      
Deferred tax liability, undistributed earnings from foreign subsidiaries $ 2.0 $ 2.1 $ 1.7
U.S. income and foreign withholding taxes 33.8 29.4 32.4
U.S. foreign income tax credits 31.8 27.3 30.7
Undistributed earnings from our foreign subsidiaries that will not be reinvested indefinitely $ 88.6 $ 75.8 $ 85.2