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Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Apr. 02, 2017
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Cost recognized for matching contributions $ 0.8 $ 1.1  
United States Postretirement Benefit Plan of US Entity      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Participant balances percent vested (percent) 100.00%    
Deferred compensation plan obligations $ 16.2   $ 15.0
Deferred compensation plan assets 16.3   16.0
United States Postretirement Benefit Plan of US Entity | Fox Enterprises      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Deferred compensation plan assets     0.4
Deferred compensation liability     0.9
International Employee Benefit Plan      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Deferred compensation liability $ 0.9   $ 0.7