Stock-Based Compensation, Employee Stock Purchase Plan (Details) - ESP Plan [Member] - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Mar. 25, 2017 |
Mar. 26, 2016 |
Mar. 25, 2017 |
Mar. 26, 2016 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |
6 months
|
|
6 months
|
6 months
|
| Unrecognized compensation costs related to unvested units |
$ 3.6
|
$ 4.7
|
$ 3.6
|
$ 4.7
|
| Minimum [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Risk-free interest rate |
0.50%
|
0.20%
|
0.50%
|
10.00%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
27.20%
|
24.20%
|
22.10%
|
21.80%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |
3.50%
|
3.30%
|
3.40%
|
3.30%
|
| Maximum [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Risk-free interest rate |
0.50%
|
0.40%
|
0.70%
|
0.40%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
28.20%
|
33.10%
|
30.40%
|
33.10%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |
3.60%
|
3.60%
|
3.60%
|
3.60%
|