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Contingencies - Additional Information (Details)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 27, 2019
USD ($)
LegalMatter
Mar. 28, 2018
USD ($)
Mar. 27, 2019
USD ($)
LegalMatter
Mar. 28, 2018
USD ($)
Mar. 27, 2019
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 $ 4.1
Loss contingency, receivable 1.7   1.7   1.7
Loss contingency, estimate of possible loss $ 5.0   $ 5.0   $ 5.0