Income Taxes Tax Rate Reconciliation (Details) |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Jun. 30, 2018 |
Dec. 30, 2017 |
Dec. 30, 2017 |
Jun. 29, 2019 |
Jun. 30, 2018 |
Jun. 24, 2017 |
|
| Income Tax Disclosure [Abstract] | ||||||
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 35.00% | 35.00% | 21.00% | 28.10% | 35.00% |
| General Business Tax Credit | (0.90%) | (0.80%) | (1.30%) | |||