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Equity-settled donation expense (Details) - Mar. 31, 2014 ¥ in Millions | item $ / shares shares | CNY (¥) item shares
--- | --- | ---
Equity-settled donation expense |  |
Share options granted |  | 50,000,000
Numbers of management who designated donation to non-profit organization | item | 2 | 2
Exercise period |  | 4 years
Exercise price | $ / shares | $ 25.00 |
Period over which charitable trusts are permitted to sell ordinary shares |  | 8 years
Period after which charitable trusts are permitted to sell ordinary shares |  | 1 year
Maximum number of shares charitable trusts are permitted to sell ordinary shares per year | 6,250,000 | 6,250,000
Fair value assumptions |  |
Risk-free interest rate |  | 1.02%
Expected dividend yield |  | 0.00%
Expected life (years) |  | 4 years
Expected volatility |  | 37.20%
General and administrative expenses |  |
Fair value assumptions |  |
Equity-settled donation expense | ¥ |  | ¥ 1,269
Minimum |  |
Fair value assumptions |  |
Discount for post-vesting sale restrictions |  | 18.00%
Restriction period on sales |  | 2 years
Maximum |  |
Fair value assumptions |  |
Discount for post-vesting sale restrictions |  | 38.00%
Restriction period on sales |  | 8 years

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- Definition Represents the expense recognized during the period arising from equity-settled donation (for example, shares of stock, unit, stock options or other equity instruments). + References No definition available. + Details
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- References No definition available. + Details
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- Definition Restrictions on equity-based instruments during the vesting period, such as the inability to transfer unvested awards, are not taken into account in estimating the fair value of the award. However, restrictions that remain in effect after an award is vested, such as the inability to transfer or hedge vested options or a prohibition on the sale of outstanding vested shares (or other type of equity) for a period of time, affect the estimate of an award's fair value. + 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 No definition available. + Details
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- Definition Expected term of equity-settled awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition The 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 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. + References No definition available. + Details
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- Definition Number of management members authorize to designate non-profit organization to receive share options. + References No definition available. + Details
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- Definition Period from grant date that an equity-settled donations can be exercise, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Per share amount at which grantees of equity-settle donation can acquire shares of common stock by exercise of options. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Period after which equity-settled donations can be exercised, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Period that an equity-settled donations can be exercised from the date that such awards are allowed to be exercised, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Period over which underlying ordinary shares may not be sold, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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