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- Definition

Environmental Remediation Charge

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Total number of PPG sites to be remediated under the 1990 administrative consent order.

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- Definition

Percentage Of Total Remaining Reserve

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

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- Definition

Estimate of reasonably possible loss exposure in excess of amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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The carrying amount of the contractual right to receive fees, as compensation in exchange for providing a guarantee to a third party, over life of the guarantee.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Cash outflows made during the period for environmental remediation activities.

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Commitments and Contingent Liabilities (Additional Information) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) Location	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Location	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2011 Location
Commitments and Contingencies Disclosure [Line Items]
Environmental remediation charges	$ 0	$ 0	$ 34	$ 0
Reserves for environmental contingencies	259		259		$ 258
Reserves for environmental contingencies classified as current liabilities	67		67		73
Environmental remediation charge	1	1	35	2
Payments for Environmental Liabilities	14	$ 10	31	$ 22
Guarantees	14		14
Outstanding letters of credit	162		162
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	141		141		136
Legacy Glass and Chemical Sites [Member]
Commitments and Contingencies Disclosure [Line Items]
Environmental remediation charges			8
Reserves for environmental contingencies	71		71		71
Other Environmental Contingencies [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	$ 47		$ 47		$ 51
Judicial Consent Order [Member]
Commitments and Contingencies Disclosure [Line Items]
Total number of sites to be remediated \| Location	19		19			20
Excavation of Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	22.00%		22.00%
Soil Treatment, Transportation And Disposal Of Excavated Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	25.00%		25.00%
Construction Services (Related To Soil Excavation, Groundwater Management And Site Security) [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	29.00%		29.00%