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Employee Pension and Other Benefit Plans - Weighted Average Assumptions (Details) - Pension Benefit Plans
12 Months Ended
Jul. 01, 2017
Jul. 02, 2016
Jun. 27, 2015
Weighted-average assumptions used to determine net period cost:      
Discount rate 2.10% 2.10% 3.00%
Expected long-term return on plan assets 4.80% 5.30% 5.80%
Rate of pension increase 2.20% 2.30% 2.30%
Weighted-average assumptions used to determine benefit obligation at end of year:      
Discount rate 2.00% 1.70% 2.60%
Rate of pension increase 2.30% 2.10% 2.20%