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Business Combinations and Investments, Goodwill and Acquired Intangible Assets (Details)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
May. 06, 2016
USD ($)
business
Mar. 29, 2015
USD ($)
Jan. 03, 2016
USD ($)
Apr. 03, 2016
USD ($)
Apr. 29, 2015
Business Acquisition [Line Items]          
Payments to acquire businesses, net of cash acquired   $ 18.8 $ 66.7    
Goodwill     1,140.2 $ 1,151.9  
Acquired intangibles, net     $ 243.3 $ 240.0  
Subsidiaries | Optech Incorporated          
Business Acquisition [Line Items]          
Remaining percentage of voting interests acquired         49.00%
Subsequent Event          
Business Acquisition [Line Items]          
Number of businesses acquired | business 2        
Payments to acquire businesses, net of cash acquired $ 60.0