Casualty, Environmental and Other Reserves (Tables)

3 Months Ended

Mar. 31, 2021

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, 2021						December 31, 2020
(Dollars in millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	38	$	99	$	137	$	38	$	93	$	131
Occupational	11		52		63		11		54		65
Total Casualty	49		151		200		49		147		196
Environmental	23		54		77		23		53		76
Other	17		24		41		18		24		42
Total	$	89	$	229	$	318	$	90	$	224	$	314