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Contingencies Gain Contingency (Details) - USD ($)
25 Months Ended
Apr. 25, 2019
Sep. 26, 2018
Oct. 31, 2017
Gain Contingencies [Line Items]      
Gain Contingency, Unrecorded Amount     $ 84,300,000
Litigation Settlement Interest     0.09
Litigation Settlement, Expense     $ 7,200,000
Litigation Settlement, Amount Awarded from Other Party   $ 141,700,000  
Proceeds from Legal Settlements   $ 35,700,000  
Subsequent Event [Member]      
Gain Contingencies [Line Items]      
Proceeds from Legal Settlements $ 20,100,000