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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
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 September 30, |  | Nine months ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net income available to IPG common stockholders | $ | 243.7 |  |  | $ | 251.8 |  |  | $ | 635.2 |  |  | $ | 640.8 |
Weighted-average number of common shares outstanding - basic | 383.6 |  |  | 390.6 |  |  | 385.0 |  | 392.7
Dilutive effect of stock options and restricted shares | 1.9 |  |  | 3.5 |  |  | 1.8 |  |  | 3.5
Weighted-average number of common shares outstanding - diluted | 385.5 |  |  | 394.1 |  |  | 386.8 |  | 396.2
Earnings per share available to IPG common stockholders: |  |  |  |  |  |  |
Basic | $ | 0.64 |  |  | $ | 0.64 |  |  | $ | 1.65 |  |  | $ | 1.63 |
Diluted | $ | 0.63 |  |  | $ | 0.64 |  |  | $ | 1.64 |  |  | $ | 1.62 |

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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