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Share-Based Compensation (Summary of Share-Based Compensation Expense) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2013
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Mar. 31, 2012
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||
| Share-based compensation expense before income taxes | $ 9 | $ 10 |
| Income tax benefit | (4) | (4) |
| Share-based compensation expense after income taxes | $ 5 | $ 6 |
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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| X | ||||||||||
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- Details
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- Definition
The component of income tax expense representing amounts paid or payable (or refundable) which are classified as "income taxes" as determined by applying the provisions of enacted tax law to other than the taxable Income or Loss from continuing operations for the period. Items affecting income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other". Reference 1: http://www.xbrl.org/2003/role/presentationRef
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