v3.26.1
Goodwill and Other Intangible Assets (Notes)
3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
6. Goodwill and Other Intangible Assets

There were no changes in the carrying value of goodwill by reportable segment for the three months ended March 31, 2026.

Other Intangible Assets

The gross carrying value and accumulated amortization for each major class of intangible assets are as follows:
March 31, 2026December 31, 2025
(in millions)Gross Carrying
Amount
Accumulated
Amortization
Gross Carrying
Amount
Accumulated
Amortization
Amortized intangible assets:
Trademarks$15.2 $3.0 $15.2 $2.8 
Customer relationships118.4 42.6 118.4 39.5 
Developed technology26.3 9.5 26.3 8.8 
Other0.8 0.5 0.8 0.5 
Total160.7 55.6 160.7 51.6 
Unamortized intangible assets:
Trademarks32.0 32.0 
Total intangible assets, net$137.1 $141.1 

Amortization expense totaled $4.0 million for both the three months ended March 31, 2026 and 2025.

Amortization expense for the next five years, based on current definite-lived intangible balances, is estimated to be as follows:
(in millions)
Q2-Q4 2026$12.0 
202715.9 
202815.2 
202912.8 
203011.7 
2031 and thereafter37.5 
Total$105.1