Options and Awards Valuation Assumptions (Details) - shares shares in Thousands |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Fair Value Assumptions and Methodology | |||
Options Granted | 481 | 497 | 637 |
Weighted Average Risk-Free Rate | 2.00% | 1.40% | 1.70% |
Expected Life | 6 years 2 months | 6 years 4 months | 6 years 6 months |
Weighted Average Volatility | 35.20% | 37.80% | 39.50% |
Weighted Average Dividend Yield | 0.80% | 0.80% | 0.60% |
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- Definition Weighted Average Dividend Yield No definition available.
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- References No definition available.
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average expected volatility rate of share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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