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Earnings Per Share | 9 Months Ended
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Sep. 27, 2014
Earnings Per Share | Earnings (Loss) Per Share Basic and diluted earnings (loss) per share were calculated as follows:
| Three months ended |  | Nine months ended
In millions, except per-share data | September 27, 2014 | September 28, 2013 |  | September 27, 2014 | September 28, 2013
Net income (loss) attributable to Pentair plc | $ | (186.0 | ) | $ | 172.8 |  |  | $ | 94.1 |  | $ | 378.6 |
Net income from continuing operations attributable to Pentair plc | $ | 192.5 |  | $ | 165.0 |  |  | $ | 477.2 |  | $ | 348.8 |
Weighted average ordinary shares outstanding |  |  |  |  |
Basic | 190.2 |  | 199.3 |  |  | 193.2 |  | 202.1 |
Dilutive impact of stock options and restricted stock units | 2.9 |  | 3.5 |  |  | 3.2 |  | 3.5 |
Diluted | 193.1 |  | 202.8 |  |  | 196.4 |  | 205.6 |
Earnings (loss) per ordinary share attributable to Pentair plc |  |  |  |  |
Basic |  |  |  |  |
Continuing operations | $ | 1.01 |  | $ | 0.83 |  |  | $ | 2.47 |  | $ | 1.73 |
Discontinued operations | (1.99 | ) | 0.04 |  |  | (1.98 | ) | 0.14 |
Basic earnings (loss) per ordinary share | $ | (0.98 | ) | $ | 0.87 |  |  | $ | 0.49 |  | $ | 1.87 |
Diluted |  |  |  |  |
Continuing operations | $ | 1.00 |  | $ | 0.81 |  |  | $ | 2.43 |  | $ | 1.70 |
Discontinued operations | (1.95 | ) | 0.04 |  |  | (1.95 | ) | 0.14 |
Diluted earnings (loss) per ordinary share | $ | (0.95 | ) | $ | 0.85 |  |  | $ | 0.48 |  | $ | 1.84 |
Anti-dilutive stock options excluded from the calculation of diluted earnings per share | 0.5 |  | 0.1 |  |  | 0.5 |  | 0.9 |

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