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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - ASSUMPTIONS (Details)
12 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jul. 01, 2017
Pension Benefits | United States      
Weighted-average assumptions used to determine benefit obligations      
Discount rate 3.70% 4.28%  
Rate of compensation increase 2.56% 2.62%  
Weighted-average assumptions used in calculating net periodic benefit cost      
Discount rate 4.28% 4.19% 4.07%
Expected rate of return 5.00% 7.00% 7.25%
Rate of compensation increase 2.62% 2.62% 2.62%
Discount rate used to calculate next year benefit costs 3.70%    
Expected rate of return on plan assets used in calculating net periodic benefit cost for next fiscal year 5.00%    
Pension Benefits | United Kingdom      
Weighted-average assumptions used to determine benefit obligations      
Discount rate 2.30% 2.85%  
Weighted-average assumptions used in calculating net periodic benefit cost      
Discount rate 2.85% 2.60% 2.80%
Expected rate of return 4.55% 4.55% 4.15%
Discount rate used to calculate next year benefit costs 2.30%    
Expected rate of return on plan assets used in calculating net periodic benefit cost for next fiscal year 4.55%    
Supplemental executive retirement plan      
Weighted-average assumptions used to determine benefit obligations      
Discount rate 3.62% 4.41%  
Weighted-average assumptions used in calculating net periodic benefit cost      
Discount rate 4.41% 4.08% 3.91%
Discount rate used to calculate next year benefit costs 3.62%