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Income Taxes - Deferred Income Taxes - Undistributed Earnings - Narrative (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended
Nov. 02, 2014
Oct. 27, 2013
Apr. 27, 2014
Income Tax Disclosure [Abstract]      
Deferred tax liability, undistributed earnings from foreign subsidiaries $ 2.2 $ 7.1 $ 2.0
U.S. income and foreign withholding taxes 30.6 22.4 28.1
U.S. foreign income tax credits 28.4 15.3 26.1
Undistributed earnings from our foreign subsidiaries that will not be reinvested indefinitely $ 78.9 $ 57.7 $ 72.8