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Stock-Based Compensation Assumptions Used (Details) - Stock Options
9 Months Ended
Sep. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average volatility 21.00% [1]
Dividend yield 0.50%
Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 1.90%
Expected years until exercise 5 years 6 months
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 2.26%
Expected years until exercise 8 years
[1] Weighted average volatility was estimated based on an average historical stock price volatility of a group of peer companies, given our limited trading history.