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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 28, 2014
Share-based Compensation [Abstract] |
Fair value assumptions for performance awards | The fair values of the senior executives' performance share award grants with a TSR modifier at the grant date in 2014 and 2013 were $41.38 and $35.93, respectively, which were estimated using the Monte Carlo valuation model, and incorporated the following assumptions:
| 2014 |  | 2013
Risk-free interest rate | 0.6 | % |  | 0.4 | %
Dividend yield | 1.0 | % |  | 0.1 | %
Volatility factor | 43.7 | % |  | 53.0 | %
Expected life of award | 2.9 years |  |  | 2.9 years |

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- Definition Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] + References No definition available. + Details
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