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Stock-Based Compensation Plans (Details 5) - Performance awards - $ / shares | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] |  |  |
Dividend yield (as a percent) | 3.30% | 3.00% | 3.60%
Estimated volatility, minimum (as a percent) | 15.20% | 12.00% | 17.60%
Estimated volatility, maximum (as a percent) | 22.80% | 17.30% | 18.60%
Risk-free interest rate, minimum (as a percent) | 0.44% | 0.07% | 0.04%
Risk-free interest rate, maximum (as a percent) | 0.88% | 1.09% | 0.72%
Estimated performance award value based on total shareholder return measure (in dollars per share) | $ 131.24 | $ 139.18 | $ 103.20
Historical volatility (as a percent) | 50.00% | 50.00% | 50.00%
Implied volatility (as a percent) | 50.00% | 50.00% | 50.00%
Market closing price (in dollars per share) | $ 161.66 | $ 166.23 | $ 128.97

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- Definition The historical volatility rate used in valuation technique of calculation of fair value of awards. + References No definition available. + Details
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- Definition The implied volatility rate used in valuation technique of calculation of fair value of awards. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the maximum 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. + References No definition available. + Details
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- Definition The estimated measure of the minimum 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. + References No definition available. + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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