Employee Benefit Plans (Stock-Based Compensation Plans) (Details) $ in Millions |
12 Months Ended |
---|---|
Dec. 30, 2017
USD ($)
| |
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |
Unrecognized compensation cost related to nonvested share-based compensation arrangements | $ 43.7 |
Weighted-average period over which unrecognized compensation cost is expected to be recognized | 1 year 5 months |