The calculation of basic and diluted earnings per share is as follows (in millions, except per share data): | | | | | | | | | | | | | | | | | | Three Months Ended September 30, | | Nine Months Ended September 30, | | 2013 | | 2012 | | 2013 | | 2012 | Numerator for basic and diluted earnings per share: | | | | | | | | Income from continuing operations | $ | 122.3 |
| | $ | 106.2 |
| | $ | 302.7 |
| | $ | 290.8 |
| Income from discontinued operations | 71.0 |
| | 2.1 |
| | 54.6 |
| | 8.6 |
| Net income | $ | 193.3 |
| | $ | 108.3 |
| | $ | 357.3 |
| | $ | 299.4 |
| Dividends and equivalents for share-based awards expected to be forfeited | — |
| | — |
| | 0.1 |
| | — |
| Net income for basic earnings per share | $ | 193.3 |
| | $ | 108.3 |
| | $ | 357.4 |
| | $ | 299.4 |
| Effect of Preferred Securities (1) | — |
| | — |
| | — |
| | — |
| Net income for diluted earnings per share | $ | 193.3 |
| | $ | 108.3 |
| | $ | 357.4 |
| | $ | 299.4 |
| Denominator for basic and diluted earnings per share: | | | | | | | | Weighted-average shares outstanding | 287.7 |
| | 288.0 |
| | 287.8 |
| | 288.9 |
| Share-based payment awards classified as participating securities | 2.4 |
| | 2.7 |
| | 2.5 |
| | 2.8 |
| Denominator for basic earnings per share | 290.1 |
| | 290.7 |
| | 290.3 |
| | 291.7 |
| Dilutive securities (2) | 2.8 |
| | 2.0 |
| | 3.1 |
| | 2.1 |
| Preferred Securities (1) | — |
| | — |
| | — |
| | — |
| Denominator for diluted earnings per share | 292.9 |
| | 292.7 |
| | 293.4 |
| | 293.8 |
| Basic earnings per share: | | | | | | | | Income from continuing operations | $ | 0.42 |
| | $ | 0.37 |
| | $ | 1.04 |
| | $ | 1.00 |
| Income from discontinued operations | $ | 0.24 |
| | $ | 0.01 |
| | $ | 0.19 |
| | $ | 0.03 |
| Net income | $ | 0.67 |
| | $ | 0.37 |
| | $ | 1.23 |
| | $ | 1.03 |
| Diluted earnings per share: | | | | | | | | Income from continuing operations | $ | 0.42 |
| | $ | 0.36 |
| | $ | 1.03 |
| | $ | 0.99 |
| Income from discontinued operations | $ | 0.24 |
| | $ | 0.01 |
| | $ | 0.19 |
| | $ | 0.03 |
| Net income | $ | 0.66 |
| | $ | 0.37 |
| | $ | 1.22 |
| | $ | 1.02 |
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