Commitments and Contingent Liabilities (Additional Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) Location	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2011 Location
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	$ 276		$ 258
Reserves for environmental contingencies classified as current liabilities	72		73
Environmental remediation charge	34	$ 1
Payments for Environmental Liabilities	17	$ 12
Guarantees	14
Outstanding letters of credit	167
Minimum
Commitments and Contingencies Disclosure [Line Items]
Unreserved loss contingencies related to environmental matters	100
Maximum
Commitments and Contingencies Disclosure [Line Items]
Unreserved loss contingencies related to environmental matters	200
Jersey City Manufacturing Plant [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	149		136
Legacy Glass and Chemical Sites [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	78		71
Other Environmental Contingencies [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	$ 49		$ 51
Judicial Consent Order [Member]
Commitments and Contingencies Disclosure [Line Items]
Total number of sites to be remediated | Location	19			20
Excavation of Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	31.00%
Soil Treatment, Transportation And Disposal Of Excavated Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	34.00%
Construction Services (Related To Soil Excavation, Groundwater Management And Site Security) [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	14.00%