Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets consists of the following:

	September 30, 2024						December 31, 2023
(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Acquired intangible assets	$	1,087	$	(956)	$	131	$	1,087	$	(940)	$	147
Patents and licenses	14		(7)		7		10		(6)		4
Total intangible assets	$	1,101	$	(963)	$	138	$	1,097	$	(946)	$	151