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Commitments And Contingencies (Narrative) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract] |  |  |
Uncertain tax positions | $ 4,300,000 |  |
Expiration Date of Registry Agreement | Nov. 30, 2030 |  |
Registry fee per transaction | $ 0.25 |  |
Payments for registry fees | 38,000,000.0 | $ 38,100,000 | $ 39,900,000
ICANN SSR Payments | $ 4,000,000.0 |  |

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- Definition Amount recognized for uncertainty in income taxes classified as noncurrent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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