Intangible Assets - Summary (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | $ 6,456.3 | $ 5,814.8 |
| Accumulated Amortization | (3,027.1) | (2,716.3) |
| Net | 3,429.2 | 3,098.5 |
| Customer relationships | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | 2,187.0 | 2,085.9 |
| Accumulated Amortization | (775.5) | (684.9) |
| Net | 1,411.5 | 1,401.0 |
| Internal use software | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | 1,860.8 | 1,778.3 |
| Accumulated Amortization | (947.5) | (822.8) |
| Net | 913.3 | 955.5 |
| Database and credit files | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | 1,824.2 | 1,383.0 |
| Accumulated Amortization | (1,093.6) | (1,010.4) |
| Net | 730.6 | 372.6 |
| Trademarks, copyrights and patents | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | 583.0 | 566.4 |
| Accumulated Amortization | (209.8) | (197.9) |
| Net | 373.1 | 368.6 |
| Noncompete and other agreements | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross | 1.3 | 1.2 |
| Accumulated Amortization | (0.7) | (0.3) |
| Net | $ 0.6 | $ 0.8 |
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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