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Noncontrolling and Redeemable Noncontrolling Interests - Noncontrolling Interests (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Noncontrolling Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest |  | $ 18,537 |
Nonredeemable Noncontrolling Interest | $ 431,839 |  | $ 462,097
Stagwell Global |  |  |
Noncontrolling Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | 248 | 816 |
Nonredeemable Noncontrolling Interest | 30,412 |  | 33,691
Stagwell Media |  |  |
Noncontrolling Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | (3,165) | $ 17,721 |
Nonredeemable Noncontrolling Interest | $ 401,427 |  | $ 428,406

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