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Earnings per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Basic and Diluted Earnings per Common Share | Basic and diluted earnings per common share for the years ended December 31, 2017, 2016 and 2015 were calculated as follows:
(in millions, except per share data) | 2017 |  | 2016 |  | 2015
Net earnings from continuing operations | $ | 187.3 |  |  | $ | 272.6 |  |  | $ | 230.9 |
Earnings (loss) from discontinued operations, net of tax | (40.9 | ) |  | 3.4 |  |  | 10.5 |
Net earnings | $ | 146.4 |  |  | $ | 276.0 |  |  | $ | 241.4 |
Weighted average outstanding shares-basic | 89.4 |  |  | 91.2 |  |  | 93.0 |
Dilutive effect of common stock equivalents | 0.7 |  |  | 0.8 |  |  | 1.3 |
Weighted average outstanding shares-diluted | 90.1 |  |  | 92.0 |  |  | 94.3 |
Basic earnings (loss) per common share: |  |  |  |  |
Continuing operations | $ | 2.10 |  |  | $ | 2.99 |  |  | $ | 2.49 |
Discontinued operations | (0.46 | ) |  | 0.04 |  |  | 0.11 |
Net earnings | $ | 1.64 |  |  | $ | 3.03 |  |  | $ | 2.60 |
Diluted earnings (loss) per common share: |  |  |  |  |
Continuing operations | $ | 2.08 |  |  | $ | 2.96 |  |  | $ | 2.45 |
Discontinued operations | (0.46 | ) |  | 0.04 |  |  | 0.11 |
Net earnings | $ | 1.62 |  |  | $ | 3.00 |  |  | $ | 2.56 |

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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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