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Earnings Per Common Share (EPS) (Tables) | 9 Months Ended
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Sep. 30, 2011
Earnings Per Share Reconciliation [Abstract] |
Computation of basic and diluted EPS | The computations of basic and diluted EPS were as follows:
|  |  |  |  |  | Three Months Ended |  | Nine Months Ended
|  |  |  |  |  | September 30, |  | September 30,
(Millions, except per share amounts) |  | 2011 |  |  | 2010 |  | 2011 |  |  | 2010
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
| Basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |
|  | Income from continuing operations |  | $ | 1,235 |  | $ | 1,093 |  | $ | 3,707 |  | $ | 2,995
|  | Earnings allocated to participating share awards |  |  |  |  |  |  |  |  |  |  |  |
|  |  | and other items(a) |  |  | (15) |  |  | (13) |  |  | (44) |  |  | (38)
|  | Income from discontinued operations, net of tax |  |  | ― |  |  | ― |  |  | 36 |  |  | ―
|  | Net income attributable to common shareholders |  | $ | 1,220 |  | $ | 1,080 |  | $ | 3,699 |  | $ | 2,957
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
| Basic: Weighted-average common stock |  |  | 1,175 |  |  | 1,193 |  |  | 1,184 |  |  | 1,189
| Add: Weighted-average stock options (b) |  |  | 6 |  |  | 6 |  |  | 7 |  |  | 6
| Diluted |  |  | 1,181 |  |  | 1,199 |  |  | 1,191 |  |  | 1,195
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |
| Income from continuing operations attributable to common |  |  |  |  |  |  |  |  |  |  |  |
|  | shareholders |  | $ | 1.04 |  | $ | 0.91 |  | $ | 3.09 |  | $ | 2.49
| Income from discontinued operations |  |  | ― |  |  | ― |  |  | 0.03 |  |  | ―
| Net income attributable to common shareholders |  | $ | 1.04 |  | $ | 0.91 |  | $ | 3.12 |  | $ | 2.49
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
| Income from continuing operations attributable to common |  |  |  |  |  |  |  |  |  |  |  |
|  | shareholders |  | $ | 1.03 |  | $ | 0.90 |  | $ | 3.08 |  | $ | 2.47
| Income from discontinued operations |  |  | ― |  |  | ― |  |  | 0.03 |  |  | ―
| Net income attributable to common shareholders |  | $ | 1.03 |  | $ | 0.90 |  | $ | 3.11 |  | $ | 2.47
(a) The Company's unvested restricted stock awards, which include the right to receive non-forfeitable divi dends or dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method (i) exclude any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities from the numerator and (ii) exclude the participating securities from the denominator. (b) For both the three and nine months ended September 30, 2011, the dilutive effect of unexercised stock options excludes 19 million options. For the three and nine months ended September 30, 2010, the dilutive effect of unexercised stoc k options excludes 36 million and 37 million options, respectively. Such amounts for all periods were excluded from the computation of EPS because inclusion of the options would have been anti-dilutive.

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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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