Casualty, Environmental and Other Reserves (Tables)

6 Months Ended

Jun. 30, 2025

Casualty, Environmental and Other Reserves [Abstract]

Schedule of Casualty, Environmental and Other Reserves

Casualty, environmental and other reserves are provided for in the consolidated balance sheets as shown in the table below.

	June 30, 2025						December 31, 2024
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	54	$	95	$	149	$	51	$	91	$	142
Occupational	7		54		61		7		59		66
Total Casualty	61		149		210		58		150		208
Environmental	39		110		149		37		114		151
Other	58		45		103		54		49		103
Total	$	158	$	304	$	462	$	149	$	313	$	462