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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Net EPS | The following table sets forth the computation of basic and diluted net earnings per share (in millions, except per share data):
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Net earnings attributable to controlling interests |  | $ | 463.1 |  |  | $ | 414.4 |  |  | $ | 356.8 |
Weighted average number of common shares outstanding |  |  | 180.1 |  |  |  | 177.6 |  |  |  | 172.2 |
Dilutive effect of stock options using the treasury stock method |  |  | 2.0 |  |  |  | 0.8 |  |  |  | 1.0 |
Weighted average number of common and common equivalent shares outstanding |  |  | 182.1 |  |  |  | 178.4 |  |  |  | 173.2 |
Basic net earnings per share |  | $ | 2.57 |  |  | $ | 2.33 |  |  | $ | 2.07 |
Diluted net earnings per share |  | $ | 2.54 |  |  | $ | 2.32 |  |  | $ | 2.06 |

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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://www.xbrl.org/2003/role/presentationRef -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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