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Stock-Based Compensation (Stock Option Activity) (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 28, 2018
USD ($)
$ / shares
shares
Number of Stock Options  
Beginning balance (in shares) | shares 931,353
Granted (in shares) | shares 28,447
Exercised (in shares) | shares (413,317)
Forfeited or expired (in shares) | shares (23,700)
Ending balance (in shares) | shares 522,783
Vested and expected to vest (in shares) | shares 522,783
Exercisable (in shares) | shares 488,468
Weighted Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 30.89
Granted (in dollars per share) | $ / shares 45.13
Exercised (in dollars per share) | $ / shares 30.02
Forfeited or expired (in dollars per share) | $ / shares 41.28
Ending balance (in dollars per share) | $ / shares 31.88
Vested and expected to vest (in dollars per share) | $ / shares 31.88
Exercisable (in dollars per share) | $ / shares $ 31.37
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value  
Outstanding, weighted average remaining contractual term 5 years 10 months
Vested and expected to vest, weighted average remaining contractual term 5 years 10 months
Exercisable, weighted average remaining contractual term 5 years 7 months
Outstanding, aggregate intrinsic value | $ $ 23.1
Vested and expected to vest, aggregate intrinsic value | $ 23.1
Exercisable, aggregate intrinsic value | $ $ 21.8