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Financial Instruments and Derivative Instruments - Change in Fair value (Details) - Apex - USD ($)
$ in Millions
3 Months Ended
Nov. 30, 2015
Sep. 29, 2019
Apr. 02, 2017
Reconciliation of changes in fair value of all financial assets and liabilities measured on recurring basis      
Shares remaining to be acquired (as a percent) 20.00%    
Call option term 3 years    
Outstanding shares acquired (as a percent) 80.00% 10.00% 10.00%
Purchase price $ 20.4 $ 2.8 $ 2.9
Aggregate ownership percentage     90.00%
Redeemable financial instrument      
Reconciliation of changes in fair value of all financial assets and liabilities measured on recurring basis      
Liability recorded at acquisition date fair value $ 5.5