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Net Income Per Common Share | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Net Income Per Common Share | Note 13 — Net Income Per Common Share Computations of basic and diluted net income per common share for the years ended December 31, 2018, 2017 and 2016, are as follows:
(In millions, except per share data) |  | 2018 |  |  | 2017 |  |  | 2016 |
Basic net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 276.6 |  |  | $ | 284.0 |  |  | $ | 249.8 |
Weighted average common shares outstanding |  |  | 87.9 |  |  |  | 90.6 |  |  |  | 92.8 |
Basic net income per common share |  | $ | 3.15 |  |  | $ | 3.13 |  |  | $ | 2.69 |
Diluted net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding — Basic |  |  | 87.9 |  |  |  | 90.6 |  |  |  | 92.8 |
Plus incremental shares from assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | 0.4 |  |  |  | 0.4 |  |  |  | 0.4 |
Stock options |  |  | 0.7 |  |  |  | 0.9 |  |  |  | 1.0 |
Weighted average common shares outstanding — Dilutive |  |  | 89.0 |  |  |  | 91.9 |  |  |  | 94.2 |
Dilutive net income per common share |  | $ | 3.11 |  |  | $ | 3.09 |  |  | $ | 2.65 |
Anti-dilutive shares outstanding, excluded from computation |  | 0.2 |  |  | 0.2 |  |  | 0.4 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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