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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - DEFINED CONTRIBUTION PLAN (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Dec. 30, 2017
Jun. 30, 2018
Jul. 01, 2017
Jul. 02, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined contribution plans expense   $ 151.0 $ 141.2 $ 135.5
Safe Harbor 401(k) Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Non-elective employer contribution, percent of participant's compensation   3.00%    
Employer matching contribution percent   50.00%    
Employer matching contribution, percent of participant's compensation 5.00% 6.00%    
Safe Harbor 401(k) Plan Non Adopting Unions        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Employer matching contribution percent   50.00%    
Employer matching contribution, percent of participant's compensation   6.00%    
Management Savings Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Non-elective employer contribution, percent of participant's compensation   3.00%    
Employer matching contribution percent   50.00%    
Employer matching contribution, percent of participant's compensation   5.00%    
Maximum annual contributions per employee, percent of salary   50.00%    
Maximum annual contributions per employee, percent of bonus   100.00%