v3.25.4
Goodwill
12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
A summary of the carrying amount of goodwill by reportable segment follows:
(Dollars in millions)ASCIMSTotal
Balance at December 31, 2024$819 $419 $1,238 
Balance at December 31, 2025$819 $419 $1,238 

Goodwill as of the periods presented is reported net of $2,362 million and $606 million of accumulated impairments for the ASC and IMS segments, respectively.