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Other Intangible Assets, Net
 6 Months Ended
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Other Intangible Assets, Net and Goodwill Other Intangible Assets, Net
The following table summarizes the gross carrying amounts and accumulated amortization of our identifiable intangible assets by major class:
June 30, 2025December 31, 2024
GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
Customer relationships$7,850.4 $(1,703.5)$6,146.9 $7,773.9 $(1,515.9)$6,258.0 
Technology and content2,795.9 (1,333.2)1,462.7 2,748.8 (1,204.6)1,544.2 
Computer software1,179.7 (690.8)488.9 1,060.6 (609.2)451.4 
Trade names and other89.7 (61.1)28.6 88.4 (57.7)30.7 
Definite-lived intangible assets$11,915.7 $(3,788.6)$8,127.1 $11,671.7 $(3,387.4)$8,284.3 
Indefinite-lived trade names
156.9 — 156.9 156.9 — 156.9 
Other intangible assets, net$12,072.6 $(3,788.6)$8,284.0 $11,828.6 $(3,387.4)$8,441.2 
Amortization expense related to intangible assets was $185.2 and $179.9 for the three months ended June 30, 2025 and 2024, respectively. For the six months ended June 30, 2025 and 2024, amortization expense was $365.8 and $354.4, respectively.