Shareholders' Equity (Assumptions Used in Black Scholes valuation for Options and SAR's) (Details) - $ / shares |
12 Months Ended | ||
---|---|---|---|
Dec. 28, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
|
Options and SAR's | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Per Share Weighted Average Fair Value of Grants (in dollars per share) | $ 20.84 | $ 22.73 | $ 23.31 |
Risk-Free Interest Rate | 2.40% | 2.90% | 2.10% |
Expected Life (Years) | 7 years | 7 years | 7 years |
Expected Volatility | 25.00% | 27.80% | 28.60% |
Expected Dividend Yield | 1.50% | 1.40% | 1.30% |
Performance Share Units | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Risk-Free Interest Rate | 2.30% | 2.70% | 1.60% |
Expected Life (Years) | 3 years | 3 years | 3 years |
Expected Volatility | 25.00% | 25.00% | 24.00% |
Expected Dividend Yield | 1.50% | 1.40% | 1.30% |