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Income (Loss) Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following table sets forth the computations of basic and diluted income (loss) per common share:
| Twelve Months Ended December 31, 2021
Numerator: |  |  |
Net loss attributable to Stagwell Inc. common shareholders | $ | (3,706) |  |  |
Denominator: |  |  |
Weighted average number of common shares outstanding | 90,426,215 |  |  |
Earnings Per Share - Basic & Diluted | $ | (0.04) |  |  |
Anti-dilutive: |  |  |
Class C shares | 179,970,051 |  |  |
Stock Appreciation Rights and Restricted Awards | 9,508,668 |  |  |

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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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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