Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Other Intangible Asset Balances

The following table presents goodwill and other intangible asset balances and adjustments to those balances for the nine months ended September 30, 2025. There is no remaining goodwill attributed to the Company's trucking operating segment as of September 30, 2025, compared to $159 million as of December 31, 2024. The goodwill balance attributed to the rail segment was $80 million at the end of each of the periods shown. All other intangible assets are attributed to the trucking operating segment.

	Goodwill		Intangible Assets
(Dollars in Millions)	Net Carrying Amount		Cost		Accumulated Amortization		Net Carrying Amount		Total Goodwill and Other Intangible Assets - Net
Balance at December, 31, 2024	$	239	$	231	$	(37)	$	194	$	433
Additions	5		5		—		5		10
Amortization	—		—		(9)		(9)		(9)
Impairment	(164)		—		—		—		(164)
Balance at September, 30, 2025	$	80	$	236	$	(46)	$	190	$	270