| Intangible Asset, Finite-Lived |
Intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2026 | | December 31, 2025 | | Gross | | Accumulated
Amortization | | Net | | Gross | | Accumulated
Amortization | | Net | | Customer relationships | $ | 2,189.1 | | | $ | (744.8) | | | $ | 1,444.3 | | | $ | 2,085.9 | | | $ | (684.9) | | | $ | 1,401.0 | | | Internal use software | 1,814.3 | | | (885.4) | | | 928.9 | | | 1,778.3 | | | (822.8) | | | 955.5 | | | Database and credit files | 1,831.0 | | | (1,062.3) | | | 768.7 | | | 1,383.0 | | | (1,010.4) | | | 372.6 | | | Trademarks, copyrights and patents | 583.5 | | | (205.8) | | | 377.7 | | | 566.4 | | | (197.9) | | | 368.6 | | | Noncompete and other agreements | 1.3 | | | (0.6) | | | 0.7 | | | 1.2 | | | (0.3) | | | 0.8 | | | Total intangible assets | $ | 6,419.1 | | | $ | (2,898.8) | | | $ | 3,520.4 | | | $ | 5,814.8 | | | $ | (2,716.3) | | | $ | 3,098.5 | |
Changes in the carrying amount of intangible assets between periods consisted of the following: | | | | | | | | | | | | | | | | | | | Gross | | Accumulated Amortization | | Net | Balance, December 31, 2025 | $ | 5,814.8 | | | $ | (2,716.3) | | | $ | 3,098.5 | | | Business acquisitions | 590.1 | | | — | | | 590.1 | | | Developed internal use software | 100.0 | | | — | | | 100.0 | | | | | | | | | Amortization | — | | | (257.2) | | | (257.2) | | | Disposals and retirements | (70.3) | | | 69.6 | | | (0.7) | | | Foreign exchange rate adjustment | (15.3) | | | 5.1 | | | (10.2) | | | Balance, June 30, 2026 | $ | 6,419.1 | | | $ | (2,898.8) | | | $ | 3,520.4 | |
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