Stock Option Activity (Detail) (USD $)
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9 Months Ended |
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Dec. 31, 2012
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Number of Shares, Outstanding Options at Beginning of Period | 3,241,322 |
Number of Shares, Granted | 567,179 |
Number of Shares, Exercised | (588,601) |
Number of Shares, Cancelled | (42,278) |
Number of Shares, Outstanding Options at End of Period | 3,177,622 |
Number of Shares, Options Exercisable at End of Period | 1,106,824 |
Weighted-Average Exercise Price, Outstanding Options at Beginning of Period | $ 36.11 |
Weighted-Average Exercise Price, Granted | $ 34.48 |
Weighted-Average Exercise Price, Exercised | $ 26.67 |
Weighted-Average Exercise Price, Cancelled | $ 42.21 |
Weighted-Average Exercise Price, Outstanding Options at End of Period | $ 37.48 |
Weighted-Average Exercise Price, Options Exercisable at End of Period | $ 29.78 |
Weighted-Average Exercise Price, Weighted-Average Fair Value of Options Granted during the Period | $ 13.22 |
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- Details
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded. No definition available.
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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