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Earnings Per Share | 9 Months Ended
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Sep. 30, 2012
Earnings Per Share | Note 12: Earnings Per Share Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects the dilutive effect of all stock options and other items outstanding during the period that could potentially result in the issuance of common stock. For the three months ended September 30, 2012 and 2011, there were 3,404,672 and 3,783,574, respectively, of stock options outstanding that were not included in the diluted earnings per share calculation because they were antidilutive. For the nine months ended September 30, 2012 and 2011, there were 3,457,769 and 3,804,671, respectively, of stock options outstanding that were not included in the diluted earnings per share calculation because they were antidilutive. The following table presents the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2012 and 2011:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
$ in millions except share and per share amounts |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Net income (loss) |  | $ | 7 |  |  | $ | 444 |  |  | $ | 598 |  |  | $ | (693) |
Basic weighted average shares(1) |  |  | 193,879,994 |  |  |  | 195,612,615 |  |  |  | 193,760,654 |  |  |  | 198,262,715 |
Effect of common stock equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 1,097,648 |  |  |  | 734,887 |  |  |  | 1,074,883 |  |  |  | - |
Diluted weighted average shares |  |  | 194,977,642 |  |  |  | 196,347,502 |  |  |  | 194,835,537 |  |  |  | 198,262,715 |
Net income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.04 |  |  | $ | 2.27 |  |  | $ | 3.09 |  |  | $ | (3.50) |
Diluted |  | $ | 0.04 |  |  | $ | 2.26 |  |  | $ | 3.07 |  |  | $ | (3.50) |
(1) - |  | Includes 5,524,396 and 5,038,788 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the three months ended September 30, 2012 and 2011, respectively. Includes 5,442,143 and 5,085,256 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the nine months ended September 30, 2012 and 2011, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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