Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies - Investments, Additional Information (Details)

v3.19.3
Organization and Significant Accounting Policies - Investments, Additional Information (Details)
$ in Millions
12 Months Ended
Sep. 28, 2019
USD ($)
company
Sep. 29, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 27, 2019
Schedule of Equity Method Investments [Line Items]        
Owned percentage in unconsolidated entities       65.00%
Number of unconsolidated companies | company 10      
Equity income (loss) $ 1.2 $ (2.8) $ 0.9  
Investment in unconsolidated companies $ 12.1 $ 18.5    
Minimum        
Schedule of Equity Method Investments [Line Items]        
Owned percentage in unconsolidated entities 7.00%      
Maximum        
Schedule of Equity Method Investments [Line Items]        
Owned percentage in unconsolidated entities 50.00%