Casualty, Environmental and Other Reserves (Tables)

6 Months Ended

Jun. 30, 2024

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, 2024						December 31, 2023
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	51	$	82	$	133	$	45	$	83	$	128
Occupational	11		56		67		7		60		67
Total Casualty	62		138		200		52		143		195
Environmental	36		113		149		41		113		154
Other	50		48		98		51		40		91
Total	$	148	$	299	$	447	$	144	$	296	$	440