Casualty, Environmental and Other Reserves (Tables)

3 Months Ended

Mar. 31, 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.

	March 31, 2025						December 31, 2024
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	51	$	93	$	144	$	51	$	91	$	142
Occupational	7		59		66		7		59		66
Total Casualty	58		152		210		58		150		208
Environmental	37		114		151		37		114		151
Other	51		53		104		54		49		103
Total	$	146	$	319	$	465	$	149	$	313	$	462