Casualty, Environmental and Other Reserves (Tables)

3 Months Ended

Mar. 31, 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.

	March 31, 2019						December 31, 2018
(Dollars in millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	41	$	100	$	141	$	40	$	103	$	143
Occupational	10		44		54		10		46		56
Total Casualty	51		144		195		50		149		199
Environmental	38		42		80		39		41		80
Other	23		21		44		24		21		45
Total	$	112	$	207	$	319	$	113	$	211	$	324