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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Basic and Diluted Earnings Per Share | Basic and diluted earnings per share were calculated as follows:
| Three months ended |  | Six months ended
In millions, except per-share data | June 30, 2019 | June 30, 2018 |  | June 30, 2019 | June 30, 2018
Net income | $ | 114.3 |  | $ | 41.5 |  |  | $ | 165.6 |  | $ | 144.4 |
Net income from continuing operations | $ | 115.1 |  | $ | 77.9 |  |  | $ | 167.5 |  | $ | 136.3 |
Weighted average ordinary shares outstanding |  |  |  |  |
Basic | 169.8 |  | 176.9 |  |  | 170.6 |  | 178.1 |
Dilutive impact of stock options, restricted stock units and performance share units | 0.7 |  | 1.7 |  |  | 0.8 |  | 1.8 |
Diluted | 170.5 |  | 178.6 |  |  | 171.4 |  | 179.9 |
Earnings (loss) per ordinary share |  |  |  |  |
Basic |  |  |  |  |
Continuing operations | $ | 0.68 |  | $ | 0.44 |  |  | $ | 0.98 |  | $ | 0.77 |
Discontinued operations | (0.01 | ) | (0.21 | ) |  | (0.01 | ) | 0.04 |
Basic earnings per ordinary share | $ | 0.67 |  | $ | 0.23 |  |  | $ | 0.97 |  | $ | 0.81 |
Diluted |  |  |  |  |
Continuing operations | $ | 0.68 |  | $ | 0.44 |  |  | $ | 0.98 |  | $ | 0.76 |
Discontinued operations | (0.01 | ) | (0.21 | ) |  | (0.01 | ) | 0.04 |
Diluted earnings per ordinary share | $ | 0.67 |  | $ | 0.23 |  |  | $ | 0.97 |  | $ | 0.80 |
Anti-dilutive stock options excluded from the calculation of diluted earnings per share | 2.3 |  | 0.7 |  |  | 1.9 |  | 0.5 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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