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Earnings Per Share (Notes) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following sets forth basic and diluted earnings per common share available to IPG common stockholders.
| Years ended December 31,
| 2019 |  | 2018 |  | 2017
Net income available to IPG common stockholders | $ | 656.0 |  |  | $ | 618.9 |  |  | $ | 554.4 |
Weighted-average number of common shares outstanding - basic | 386.1 |  |  | 383.3 |  |  | 389.6 |
Dilutive effect of stock options and restricted shares | 5.1 |  |  | 5.7 |  |  | 7.7 |
Weighted-average number of common shares outstanding - diluted | 391.2 |  |  | 389.0 |  |  | 397.3 |
Earnings per share available to IPG common stockholders: |  |  |  |  |
Basic | $ | 1.70 |  |  | $ | 1.61 |  |  | $ | 1.42 |
Diluted | $ | 1.68 |  |  | $ | 1.59 |  |  | $ | 1.40 |

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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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