Commitments and Contingent Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Environmental Liabilities [Table Text Block]

Environmental Reserves
($ in millions)	September 30, 2017		December 31, 2016
New Jersey Chrome	$	144	$	163
Legacy glass and chemical	74		70
Other	54		52
Total	$	272	$	285
Current portion	$	83	$	76

Environmental Costs [Table Text Block]

Pre-tax charges against income for environmental remediation costs are included in "Other charges" in the accompanying condensed consolidated statement of income. The pre-tax charges and cash outlays related to such environmental remediation for the three and nine ended September 30, 2017 and 2016 were as follows:

	Three Months Ended September 30				Nine Months Ended September 30
($ in millions)	2017		2016		2017	2016
Environmental remediation pre-tax charges	$	3	$	3	5	11
Cash outlays for environmental remediation activities	$	14	$	12	36	35