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Share-Based Payments (Summary Of Activity Related To Stock Options) (Detail) (USD $)
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6 Months Ended | |
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Jun. 30, 2012
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Jun. 30, 2011
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| Number of Options, Outstanding at beginning of period | 46,351,349 | 54,999,626 |
| Number of Options, Granted | 1,316,677 | |
| Number of Options, Exercised | (200,092) | (18,442) |
| Number of Options, Canceled/Forfeited | (4,587,318) | (6,846,994) |
| Number of Options, Outstanding at end of period | 41,563,939 | 49,450,867 |
| Number of Options, Exercisable at end of period | 38,447,853 | 42,977,407 |
| Weighted-Average Exercise Price, Outstanding at beginning of period | $ 23.62 | $ 24.41 |
| Weighted-Average Exercise Price, Granted | $ 6.62 | |
| Weighted-Average Exercise Price, Exercised | $ 3.29 | $ 3.29 |
| Weighted-Average Exercise Price, Canceled/Forfeited | $ 24.90 | $ 24.10 |
| Weighted-Average Exercise Price, Outstanding at end of period | $ 23.57 | $ 23.98 |
| Weighted-Average Exercise Price, Exercisable at end of period | $ 24.93 | $ 26.61 |
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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 weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
For presentations that combine terminations, 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 or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited. 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 price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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| X | ||||||||||
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- Definition
The weighted average price as of the beginning of the year 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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| X | ||||||||||
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- Definition
The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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