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Financial Instruments and Derivative Instruments - Change in Fair value (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Nov. 30, 2015
Apr. 02, 2017
Jul. 02, 2017
Jul. 02, 2017
Nov. 30, 2015
Apex          
Reconciliation of changes in fair value of all financial assets and liabilities          
Balance at the ending of the period     $ 3.0    
Liability recorded at acquisition date fair value     3.0 $ 3.0  
Shares remaining to be acquired       10.00% 20.00%
Outstanding shares acquired (as a percent)   10.00%     80.00%
Purchase price $ 20.4 $ 2.9      
Redeemable financial instrument          
Reconciliation of changes in fair value of all financial assets and liabilities          
Balance at the beginning of the period   5.8 5.8    
Settlements     (2.9)    
Total realized and unrealized (gains) losses included in Comprehensive income     0.1    
Balance at the ending of the period     3.0    
Liability recorded at acquisition date fair value   $ 5.8 $ 5.8 $ 3.0  
Redeemable financial instrument | Apex          
Reconciliation of changes in fair value of all financial assets and liabilities          
Balance at the ending of the period 5.5        
Liability recorded at acquisition date fair value $ 5.5       $ 5.5