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Supplementary Data - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) agency | Jun. 30, 2025 USD ($) agency | Feb. 11, 2025 USD ($) | Feb. 07, 2024 USD ($)
Supplementary Data [Abstract] |  |  |  |
Digital specialist agencies | agency | 2 | 2 |  |
Stock repurchase program |  |  | $ 155.0 | $ 320.0
Stock repurchase program, remaining authorized repurchase amount, excluding fees | $ 137.1 | $ 137.1 |  |

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
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- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References No definition available. + Details
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