Goodwill (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill by reportable segment are as follows:

(Dollars in millions)	ASC		IMS		Total
Balance at January 1, 2023(1)	$	817	$	419	$	1,236
Purchase price adjustments for the year ended December 31, 2023	2		—		2
Balance at December 31, 2023	819		419		1,238
Balance at December 31, 2024	819		419		1,238

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(1)Goodwill is reported net of $2,362 million and $606 million of accumulated impairments as of January 1, 2023 for the ASC and IMS segments, respectively.