v2.4.0.6

Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Stock-Based Compensation Expense |
|  | Three Months Ended March 31,
(in millions) | 2013 |  | 2012
Stock Options | $ | 2 |  | $ | 2
Restricted Stock Unit Awards |  | 13 |  |  | 8
Performance Awards |  | 11 |  |  | (2)
Total | $ | 26 |  | $ | 8
Tax benefit associated with stock-based compensation expense | $ | 10 |  | $ | 3
Stock-based compensation costs capitalized |  | 1 |  |  | ―

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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