Stock-Based Compensation - Assumptions Used to Determine the Fair Value of the Awards with Market-Based (Detail) (USD $)
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3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested [Roll Forward] | ||||
Expected dividends per share | $ 0.90 | $ 0.80 | $ 0.90 | $ 0.80 |
Expected volatility, minimum | 41.50% | 36.70% | 41.50% | 36.70% |
Expected volatility, maximum | 51.60% | 50.00% | 51.60% | 50.00% |
Risk-free interest rate, minimum | 0.00% | 0.10% | 0.00% | 0.10% |
Risk-free interest rate, maximum | 2.00% | 1.20% | 2.00% | 1.20% |
Estimated cost of capital | 9.30% | 9.30% | ||
Estimated cost of capital, minimum | 11.90% | 11.90% | ||
Estimated cost of capital, maximum | 12.10% | 12.10% | ||
Expected life (in years) | 6 years | 6 years | 6 years | 6 years |
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions estimated cost of capital. No definition available.
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions estimated cost of capital, maximum. No definition available.
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions estimated cost of capital, minimum. No definition available.
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions expected dividend per share. No definition available.
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- Details
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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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- 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. No definition available.
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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. No definition available.
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- Definition
The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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- Definition
The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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