Casualty, Environmental and Other Reserves (Tables)

6 Months Ended

Jun. 30, 2019

Casualty, Environmental and Other Reserves [Abstract]

Schedule of Casualty, Environmental and Other Reserves

Personal injury and environmental reserves are considered critical accounting estimates due to the need for significant management judgment. Casualty, environmental and other reserves are provided for in the consolidated balance sheets as shown in the table below.

	June 30, 2019						December 31, 2018
(Dollars in millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	47	$	83	$	130	$	40	$	103	$	143
Occupational	9		49		58		10		46		56
Total Casualty	56		132		188		50		149		199
Environmental	32		46		78		39		41		80
Other	22		21		43		24		21		45
Total	$	110	$	199	$	309	$	113	$	211	$	324