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Property, Plant and Equipment (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2018
Mar. 25, 2017
Mar. 26, 2016
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 44.3 $ 39.5 $ 36.0
Amortization expense $ 12.3 $ 9.5 $ 7.5