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Noncontrolling and Redeemable Noncontrolling Interests - Noncontrolling Interests (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Noncontrolling Interest [Line Items] |  |  |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | $ (1,762) | $ (800) | $ 1,986 | $ (2,515) |
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest | 773 | (971) | 1,566 | (3,514) | $ 634
Income attributable to noncontrolling interests | (989) | (1,771) | (420) | (6,029) |
Nonredeemable Noncontrolling Interest | 438,354 |  | 438,354 |  | 468,577
Stagwell Global |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | 773 | (29) | 1,596 | 219 |
Income attributable to noncontrolling interests | (1,546) | (1,000) | (3,162) | (3,295) |
Nonredeemable Noncontrolling Interest | 21,540 |  | 21,540 |  | 32,362
Stagwell Media |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | (2,535) | (771) | (3,582) | (2,734) |
Income attributable to noncontrolling interests | 2,535 | $ (771) | 3,582 | $ (2,734) |
Nonredeemable Noncontrolling Interest | $ 416,814 |  | $ 416,814 |  | $ 436,215

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