Employee Benefit Costs (Schedule of Company's Pension Plan's Asset Allocations) (Details)	Jul. 01, 2018	Jul. 02, 2017
Plan Assets at Year-End	100.00%	100.00%
Domestic Equities [Member]
Plan Assets at Year-End	24.00%	23.00%
International Equities [Member]
Plan Assets at Year-End	16.00%	16.00%
Alternatives [Member]
Plan Assets at Year-End	7.00%	8.00%
Fixed Income [Member]
Plan Assets at Year-End	51.00%	50.00%
Cash Equivalents [Member]
Plan Assets at Year-End	2.00%	3.00%
Maximum [Member] | Domestic Equities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	30.00%
Maximum [Member] | International Equities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	20.00%
Maximum [Member] | Alternatives [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	10.00%
Maximum [Member] | Fixed Income [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	53.00%
Maximum [Member] | Cash Equivalents [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	2.00%
Minimum [Member] | Domestic Equities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	22.00%
Minimum [Member] | International Equities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	15.00%
Minimum [Member] | Alternatives [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Minimum [Member] | Fixed Income [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	49.00%
Minimum [Member] | Cash Equivalents [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%