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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following sets forth basic and diluted earnings per common share available to IPG common stockholders.
| Three months ended March 31,
| 2017 |  | 2016
Net income available to IPG common stockholders | $ | 21.5 |  |  | $ | 5.4 |
Weighted-average number of common shares outstanding - basic | 391.7 |  |  | 400.6 |
Add: Effect of dilutive securities |  |  |
Restricted stock, stock options and other equity awards | 7.6 |  |  | 8.7 |
Weighted-average number of common shares outstanding - diluted | 399.3 |  |  | 409.3 |
Earnings per share available to IPG common stockholders: |  |  |
Basic | $ | 0.05 |  |  | $ | 0.01 |
Diluted | $ | 0.05 |  |  | $ | 0.01 |

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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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