Commitments and Contingent Liabilities (Additional Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) Location	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2011 Location
Commitments and Contingencies Disclosure [Line Items]
Environmental remediation charges	$ 10	$ 34
Reserves for environmental contingencies	266		$ 291
Reserves for environmental contingencies classified as current liabilities	109		105
Environmental remediation charge	16	34
Payments for Environmental Liabilities	16	$ 17
Guarantees	14
Outstanding letters of credit	143
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]
Environmental remediation charges	26
Reserves for environmental contingencies	137		151
Legacy Glass and Chemical Sites [Member]
Commitments and Contingencies Disclosure [Line Items]
Environmental remediation charges	8
Reserves for environmental contingencies	68		90
Other Environmental Contingencies [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	$ 61		$ 50
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	19.00%
Soil Treatment, Transportation And Disposal Of Excavated Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	17.00%
Construction Services (Related To Soil Excavation, Groundwater Management And Site Security) [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	31.00%