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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share [Abstract] |
Reconciliation of the number of shares used for calculating basic and diluted earnings per common share | The calculation for basic and diluted EPS is as follows:
(in millions, except per share data) | Years ended December 31,
| 2012 |  | 2011 |  | 2010
Amount attributable to The McGraw-Hill Companies, Inc. common shareholders: |  |  |  |  |
Income from continuing operations | $ | 676 |  |  | $ | 607 |  |  | $ | 581 |
(Loss) income from discontinued operations | (239 | ) |  | 304 |  |  | 247 |
Net income attributable to the Company | $ | 437 |  |  | $ | 911 |  |  | $ | 828 |
Basic weighted-average number of common shares outstanding | 278.6 |  |  | 298.1 |  |  | 309.4 |
Effect of stock options and other dilutive securities | 6.0 |  |  | 5.5 |  |  | 2.8 |
Diluted weighted-average number of common shares outstanding | 284.6 |  |  | 303.6 |  |  | 312.2 |
Basic EPS: |  |  |  |  |
Income from continuing operations | $ | 2.43 |  |  | $ | 2.03 |  |  | $ | 1.88 |
(Loss) income from discontinued operations | (0.86 | ) |  | 1.02 |  |  | 0.80 |
Net income | $ | 1.57 |  |  | $ | 3.05 |  |  | $ | 2.68 |
Diluted EPS: |  |  |  |  |
Income from continuing operations | $ | 2.37 |  |  | $ | 2.00 |  |  | $ | 1.86 |
(Loss) income from discontinued operations | (0.84 | ) |  | 1.00 |  |  | 0.79 |
Net income | $ | 1.53 |  |  | $ | 3.00 |  |  | $ | 2.65 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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