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Income Per Share - Additional Information (Detail)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Earnings Per Share [Abstract]        
Stock-based awards excluded from the diluted per share calculations 15.0 20.0 16.1 18.2