Stock-Based Awards (Weighted Average Assumptions Used In Black-Scholes Option Pricing Model) (Details) |
12 Months Ended | ||
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Dec. 31, 2015
Rate
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Dec. 31, 2014
Rate
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Dec. 31, 2013
Rate
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| Employee Stock [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Volatility factor | 21.70% | 22.00% | |
| Risk-free interest rate | 0.12% | 0.08% | |
| Expected term | 6 months | 6 months | |
| Dividend yield | 1.90% | 1.70% | |
| Stock Options And Stock Appreciation Rights [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Volatility factor | 29.20% | 36.40% | 49.10% |
| Risk-free interest rate | 1.49% | 1.55% | 0.85% |
| Expected term | 4 years 5 months | 4 years 8 months | 4 years 9 months |
| Dividend yield | 2.10% | 1.80% | 1.20% |
| Market Stock Units [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Volatility factor | 39.70% | ||
| Risk-free interest rate | 1.00% | ||
| Expected term | 4 years 6 days | ||
| Dividend yield | 1.10% | ||
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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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