Contingencies and Commitments - Additional Information - 1 (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Number of cleanup locations		More than 100
Remediation reserve balance	$ 292	$ 292	$ 308
Remediation reserve balance, classified as a current liability	39	39	48
Payments related to remediation expenses applied against the reserve	10	$ 17
Actual remediation fieldwork period		4 years
Maximum [Member]
Loss Contingencies [Line Items]
Majority of the project funding period		2022
Minimum [Member]
Loss Contingencies [Line Items]
Majority of the project funding period		2018
Massena West, NY [Member]
Loss Contingencies [Line Items]
Remediation reserve balance	$ 221	$ 221	$ 228
Recurring Costs of Managing Hazardous Substances and Environmental Programs [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Percentage of cost of goods sold		1.00%