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Contingencies - Additional Information (Details)
$ in Millions
3 Months Ended 6 Months Ended 9 Months Ended
Dec. 26, 2018
USD ($)
LegalMatter
Dec. 27, 2017
USD ($)
Dec. 26, 2018
USD ($)
LegalMatter
Dec. 27, 2017
USD ($)
Dec. 26, 2018
USD ($)
LegalMatter
Loss Contingencies [Line Items]          
Letters of Credit Outstanding, Amount $ 29.0   $ 29.0   $ 29.0
Loss Contingency, Pending Claims, Number | LegalMatter 0   0   0
Loss Contingency Insurance Coverage Deductible     $ 2.0    
Cyber security incident charges $ 0.0 $ 0.0 0.4 $ 0.0 $ 3.2
Loss Contingency, Receivable 0.8   0.8   0.8
Loss Contingency, Estimate of Possible Loss $ 5.0   $ 5.0   $ 5.0