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Stock-Based Compensation (Details 4) (Restricted Stock Units Market Condition [Member], AUD)
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12 Months Ended | |
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Mar. 31, 2012
Y
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Mar. 31, 2011
Y
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Restricted Stock Units Market Condition [Member]
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| Details of restricted stock grants valued under assumptions | ||
| Date of grant | Sep. 15, 2011 | Sep. 15, 2010 |
| Dividend yield (per annum) | 2.00% | 0.00% |
| Expected volatility | 51.90% | 50.60% |
| Risk free interest rate | 1.00% | 1.50% |
| Expected life in years | 3.0 | 3.0 |
| JHX stock price at grant date | 5.64 | 5.94 |
| Number of restricted stock units | 954,705 | 951,194 |
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions date of grant. No definition available.
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- Definition
Share based compensation arrangement by share based payment award fair value assumptions grant date stock price. No definition available.
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- Definition
Share based compensation arrangement by share based payment award restricted stock units number. No definition available.
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. 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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