Casualty, Environmental and Other Reserves (Tables)

3 Months Ended

Mar. 31, 2017

Casualty, Environmental and Other Reserves [Abstract]

Schedule of Casualty, Environmental and Other Reserves

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

	March 31, 2017						December 30, 2016
(Dollars in millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	46	$	122	$	168	$	46	$	124	$	170
Occupational(a)	7		51		58		7		52		59
Total Casualty	53		173		226		53		176		229
Environmental	42		51		93		42		53		95
Other	19		28		47		20		30		50
Total	$	114	$	252	$	366	$	115	$	259	$	374