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Stock-Based Compensation (Details 4) (Stock Option [Member], USD $)
In Millions |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2011
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Jun. 30, 2010
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Jun. 30, 2011
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Jun. 30, 2010
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Stock Option [Member]
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| Stock Option Aggregate Disclosures [Abstract] | ||||
| Intrinsic value of stock options exercised | $ 76 | $ 8 | $ 165 | $ 26 |
| Cash received from option exercises | 44 | 11 | 106 | 34 |
| Treasury shares repurchased for employee payroll taxes | (16) | (2) | (41) | (8) |
| Tax benefit realized from option exercises | 29 | 3 | 63 | 10 |
| Aggregate grant-date fair value of stock options vested | $ 1 | $ 0 | $ 19 | $ 19 |
| X | ||||||||||
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- Definition
Aggregate grant-date fair value of stock options vested.
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- Definition
Value of treasury shares repurchased during period for employee payroll taxes related to the exercises of stock options.
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- Definition
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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