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v3.25.1

Basis of Presentation and Recent Developments (Details) - USD ($) $ in Thousands | May 01, 2025 | Apr. 23, 2025 | Apr. 02, 2025 | Jan. 01, 2025 | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |
Deferred acquisition consideration |  |  |  |  | $ 28,100 |
Subsequent Event [Line Items] |  |  |  |  |  |
Nonredeemable Noncontrolling Interest |  |  |  |  | 445,493 | $ 445,174
Line of Credit Facility, Current Borrowing Capacity |  |  |  |  | 640,000 |
Stagwell Media |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Nonredeemable Noncontrolling Interest |  |  |  |  | $ 423,996 | $ 423,428
Subsequent event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Conversion of Stock, Shares Converted |  | 151,648,741 |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  | $ 750,000 |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  | $ 110,000 |  |  |  |
ADK Group |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price |  |  |  | $ 24,000 |  |
Create Group Holding Limited | Subsequent event |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price |  |  | $ 15,500 |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 11,500 |  |  |
Shares issued by the Company (shares) |  |  | 653,663 |  |  |
Deferred acquisition consideration |  |  | $ 24,000 |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned |  |  | $ 4,000 |  |  |
JetFuel | Subsequent event |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price | $ 21,600 |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 10,300 |  |  |  |  |
Shares issued by the Company (shares) | 2,017,857 |  |  |  |  |
Deferred acquisition consideration | $ 59,500 |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned | $ 11,300 |  |  |  |  |

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