$PPG
PPG Industries Inc Stock $ppg

$ppg Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000007987921000008 Filed on February 18, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$3.757B	$13.83B	$3.672B
YoY Change	2.31%	-8.66%	0.74%
Cost Of Revenue	$2.140B	$7.777B	$2.111B
YoY Change	1.37%	-10.12%	-3.52%
Gross Profit	$1.617B	$6.057B	$1.561B
YoY Change	3.59%	-6.71%	7.14%
Gross Profit Margin	43.04%	43.78%	42.51%
Selling, General & Admin	$882.0M	$3.389B	$902.0M
YoY Change	-2.22%	-5.97%	5.5%
% of Gross Profit	54.55%	55.95%	57.78%
Research & Development	$100.0M	$401.0M	$109.0M
YoY Change	-8.26%	-12.06%	3.81%
% of Gross Profit	6.18%	6.62%	6.98%
Depreciation & Amortization	$125.0M	$371.0M	$134.0M
YoY Change	-6.72%	-1.07%	5.51%
% of Gross Profit	7.73%	6.13%	8.58%
Operating Expenses	$1.146B	$3.790B	$1.147B
YoY Change	-0.09%	-6.65%	3.15%
Operating Profit	$471.0M	$2.109B	$414.0M
YoY Change	13.77%	-7.13%	20.0%
Interest Expense	-$26.00M	$138.0M	-$30.00M
YoY Change	-13.33%	4.55%	-25.0%
% of Operating Profit	-5.52%	6.54%	-7.25%
Other Income/Expense, Net	-$5.000M	$104.0M	$7.000M
YoY Change	-171.43%	20.93%	-78.13%
Pretax Income	$345.0M	$1.362B	$398.0M
YoY Change	-13.32%	-18.0%	16.37%
Income Tax	$67.00M	$291.0M	$95.00M
% Of Pretax Income	19.42%	21.37%	23.87%
Net Earnings	$272.0M	$1.059B	$292.0M
YoY Change	-6.85%	-14.8%	13.18%
Net Earnings / Revenue	7.24%	7.66%	7.95%
Basic Earnings Per Share	$1.15	$4.47	$1.23
Diluted Earnings Per Share	$1.14	$4.45	$1.22
COMMON SHARES
Basic Shares Outstanding		236.8M shares
Diluted Shares Outstanding		237.9M shares

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.922B	$1.922B	$1.273B
YoY Change	50.98%	50.98%	32.19%
Cash & Equivalents	$1.826B	$1.826B	$1.216B
Short-Term Investments	$96.00M	$96.00M	$57.00M
Other Short-Term Assets	$415.0M	$415.0M	$431.0M
YoY Change	-3.71%	-3.71%	16.49%
Inventory	$1.735B	$1.735B	$1.710B
Prepaid Expenses
Receivables	$2.412B	$2.726B	$2.479B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$6.798B	$6.798B	$6.170B
YoY Change	10.18%	10.18%	3.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.127B	$3.974B	$2.983B
YoY Change	4.83%	5.55%	6.35%
Goodwill	$5.102B		$4.470B
YoY Change	14.14%		9.83%
Intangibles	$3.452B		$3.298B
YoY Change	4.67%		5.98%
Long-Term Investments	$120.0M	$387.0M	$129.0M
YoY Change	-6.98%	0.0%	-2.27%
Other Assets	$685.0M	$944.0M	$694.0M
YoY Change	-1.3%	20.25%	-4.54%
Total Long-Term Assets	$12.76B	$12.76B	$11.54B
YoY Change	10.57%	10.57%	14.76%
TOTAL ASSETS
Total Short-Term Assets	$6.798B	$6.798B	$6.170B
Total Long-Term Assets	$12.76B	$12.76B	$11.54B
Total Assets	$19.56B	$19.56B	$17.71B
YoY Change	10.44%	10.44%	10.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.792B	$2.259B	$3.496B
YoY Change	8.47%	7.67%	-3.51%
Accrued Expenses	$180.0M	$685.0M	$170.0M
YoY Change	5.88%	9.6%
Deferred Revenue
YoY Change
Short-Term Debt	$403.0M	$403.0M	$10.00M
YoY Change	3930.0%	3930.0%	150.0%
Long-Term Debt Due	$175.0M	$175.0M	$503.0M
YoY Change	-65.21%	-65.21%	-22.26%
Total Short-Term Liabilities	$4.831B	$4.831B	$4.375B
YoY Change	10.42%	10.42%	0.05%
LONG-TERM LIABILITIES
Long-Term Debt	$5.171B	$5.171B	$4.539B
YoY Change	13.92%	13.92%	3.99%
Other Long-Term Liabilities	$949.0M	$3.304B	$911.0M
YoY Change	4.17%	12.42%	8.19%
Total Long-Term Liabilities	$6.120B	$8.475B	$5.450B
YoY Change	12.29%	13.33%	4.67%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.831B	$4.831B	$4.375B
Total Long-Term Liabilities	$6.120B	$8.475B	$5.450B
Total Liabilities	$13.74B	$13.87B	$12.31B
YoY Change	11.67%	11.61%	9.06%
SHAREHOLDERS EQUITY
Retained Earnings	$19.47B		$18.91B
YoY Change	2.98%		4.27%
Common Stock	$1.977B		$1.919B
YoY Change	3.02%		9.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$13.16B		$13.19B
YoY Change	-0.25%		1.8%
Treasury Stock Shares
Shareholders Equity	$5.689B	$5.689B	$5.284B
YoY Change
Total Liabilities & Shareholders Equity	$19.56B	$19.56B	$17.71B
YoY Change	10.44%	10.44%	10.57%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	$272.0M	$1.059B	$292.0M
YoY Change	-6.85%	-14.8%	13.18%
Depreciation, Depletion And Amortization	$125.0M	$371.0M	$134.0M
YoY Change	-6.72%	-1.07%	5.51%
Cash From Operating Activities	$946.0M	$2.130B	$809.0M
YoY Change	16.93%	2.4%	1.13%
INVESTING ACTIVITIES
Capital Expenditures	-$134.0M	$304.0M	-$189.0M
YoY Change	-29.1%	-26.39%	2.16%
Acquisitions		$1.169B
YoY Change		81.8%
Other Investing Activities	-$1.122B	-$26.00M	-$72.00M
YoY Change	1458.33%	-44.68%	-73.13%
Cash From Investing Activities	-$1.256B	-$1.447B	-$261.0M
YoY Change	381.23%	43.41%	-42.38%
FINANCING ACTIVITIES
Cash Dividend Paid		$496.0M
YoY Change		5.98%
Common Stock Issuance & Retirement, Net		$0.00
YoY Change		-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	46.00M	-$59.00M	-799.0M
YoY Change	-105.76%	-92.22%	49.35%
NET CHANGE
Cash From Operating Activities	946.0M	$2.130B	809.0M
Cash From Investing Activities	-1.256B	-$1.447B	-261.0M
Cash From Financing Activities	46.00M	-$59.00M	-799.0M
Net Change In Cash	-264.0M	$610.0M	-251.0M
YoY Change	5.18%	94.27%	33.51%
FREE CASH FLOW
Cash From Operating Activities	$946.0M	$2.130B	$809.0M
Capital Expenditures	-$134.0M	$304.0M	-$189.0M
Free Cash Flow	$1.080B	$1.826B	$998.0M
YoY Change	8.22%	9.54%	1.32%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000079879
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	236788855	shares
CY2020Q2	dei	Entity Public Float EntityPublicFloat	25002000000	USD
CY2020Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.017
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.036
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.667
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Description And Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms	The options are generally exercisable 36 months after being granted and have a maximum term of 10 years.
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-1687
CY2020	dei	Entity Registrant Name EntityRegistrantName	PPG INDUSTRIES, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	25-0730780
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	One PPG Place
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Pittsburgh
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15272
CY2020	dei	City Area Code CityAreaCode	412
CY2020	dei	Local Phone Number LocalPhoneNumber	434-3131
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	25002000000	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	236788855	shares
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13834000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15146000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15374000000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	7777000000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	8653000000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	9001000000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3389000000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3604000000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	3573000000	USD
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CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	138000000	USD
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	291000000	USD
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CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	810000000	USD
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CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	96000000	USD
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CY2019Q4	us-gaap	Inventory Net InventoryNet	1710000000	USD
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CY2019Q4	us-gaap	Assets Current AssetsCurrent	6170000000	USD
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CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	379000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	220000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	267000000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	258000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	847000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	782000000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	685000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	694000000	USD
CY2020Q4	us-gaap	Assets Assets	19556000000	USD
CY2019Q4	us-gaap	Assets Assets	17708000000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3792000000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3496000000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	281000000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	196000000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	578000000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	513000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	180000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	170000000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4831000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4375000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5171000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4539000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	677000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	622000000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	945000000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	745000000	USD
CY2020Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	733000000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	661000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	435000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	452000000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	949000000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	911000000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	13741000000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	12305000000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	969000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	969000000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1008000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	950000000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	19469000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	18906000000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	13158000000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	13191000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2599000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2350000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	5689000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	5284000000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	126000000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	119000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5815000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5403000000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	19556000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17708000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5672000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1358000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-147000000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	453000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1721000000	USD
CY2018	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	42000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	4000000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7000000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	12000000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	4000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4732000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1269000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-51000000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	468000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	325000000	USD
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	243000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	10000000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8000000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	1000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5403000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	1074000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-249000000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	496000000	USD
CY2020	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	78000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	13000000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4000000	USD
CY2020	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5815000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	1074000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1269000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1358000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	18000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1071000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1269000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1340000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	509000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	511000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	497000000	USD
CY2020	us-gaap	Pension Expense PensionExpense	43000000	USD
CY2019	us-gaap	Pension Expense PensionExpense	54000000	USD
CY2018	us-gaap	Pension Expense PensionExpense	43000000	USD
CY2020	ppg	Noncash Pension Settlement Chargebeforetax NoncashPensionSettlementChargebeforetax	13000000	USD
CY2019	ppg	Noncash Pension Settlement Chargebeforetax NoncashPensionSettlementChargebeforetax	0	USD
CY2018	ppg	Noncash Pension Settlement Chargebeforetax NoncashPensionSettlementChargebeforetax	0	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7000000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	174000000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	176000000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	66000000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	93000000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	26000000	USD
CY2019	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	61000000	USD
CY2018	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	77000000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	44000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	39000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	37000000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	26000000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-10000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-4000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	1000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-47000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	45000000	USD
CY2020	us-gaap	Pension Contributions PensionContributions	17000000	USD
CY2019	us-gaap	Pension Contributions PensionContributions	13000000	USD
CY2018	us-gaap	Pension Contributions PensionContributions	99000000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	126000000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	58000000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	66000000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-187000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-121000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	69000000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-111000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-145000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	109000000	USD
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-49000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	95000000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-5000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	127000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-63000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-76000000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	25000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	13000000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	207000000	USD
CY2020	ppg	Increase Decrease In In Accrued Interest And Taxes IncreaseDecreaseInInAccruedInterestAndTaxes	108000000	USD
CY2019	ppg	Increase Decrease In In Accrued Interest And Taxes IncreaseDecreaseInInAccruedInterestAndTaxes	32000000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	17000000	USD
CY2018	ppg	Increase Decrease In In Accrued Interest And Taxes IncreaseDecreaseInInAccruedInterestAndTaxes	-50000000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	12000000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	20000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2129000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2084000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1487000000	USD
CY2020	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	1000000	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-4000000	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-20000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2130000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2080000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1467000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	304000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	413000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	411000000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1169000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	643000000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	378000000	USD
CY2020	us-gaap	Proceeds From Sale Of Land Held For Use ProceedsFromSaleOfLandHeldForUse	0	USD
CY2019	us-gaap	Proceeds From Sale Of Land Held For Use ProceedsFromSaleOfLandHeldForUse	0	USD
CY2018	us-gaap	Proceeds From Sale Of Land Held For Use ProceedsFromSaleOfLandHeldForUse	27000000	USD
CY2020	us-gaap	Payments For Hedge Investing Activities PaymentsForHedgeInvestingActivities	5000000	USD
CY2019	us-gaap	Payments For Hedge Investing Activities PaymentsForHedgeInvestingActivities	8000000	USD
CY2018	us-gaap	Payments For Hedge Investing Activities PaymentsForHedgeInvestingActivities	28000000	USD
CY2020	us-gaap	Proceeds From Hedge Investing Activities ProceedsFromHedgeInvestingActivities	22000000	USD
CY2019	us-gaap	Proceeds From Hedge Investing Activities ProceedsFromHedgeInvestingActivities	28000000	USD
CY2018	us-gaap	Proceeds From Hedge Investing Activities ProceedsFromHedgeInvestingActivities	23000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-9000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-27000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1447000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1009000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-764000000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-6000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	6000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-1000000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	1647000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	100000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	-2000000	USD
CY2020	us-gaap	Repayments Of Medium Term Notes RepaymentsOfMediumTermNotes	1100000000	USD
CY2019	us-gaap	Repayments Of Medium Term Notes RepaymentsOfMediumTermNotes	0	USD
CY2018	us-gaap	Repayments Of Medium Term Notes RepaymentsOfMediumTermNotes	0	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	800000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	800000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	415000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	595000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	992000000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	504000000	USD
CY2019	us-gaap	Repayments Of Debt RepaymentsOfDebt	637000000	USD
CY2018	us-gaap	Repayments Of Debt RepaymentsOfDebt	6000000	USD
CY2020	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	13000000	USD
CY2019	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	23000000	USD
CY2018	us-gaap	Repayments Of Assumed Debt RepaymentsOfAssumedDebt	0	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	17000000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	20000000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	15000000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	325000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1721000000	USD
CY2020	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	54000000	USD
CY2019	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	61000000	USD
CY2018	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	15000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	496000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	468000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	453000000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	39000000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-39000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-14000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-59000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-758000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1205000000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1000000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-32000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-20000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	USD
CY2018	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	610000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	314000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-534000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1216000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	902000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1436000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1826000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1216000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	902000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	153000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	127000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	108000000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	367000000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	348000000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	380000000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	164000000	shares
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued1 NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1	0	shares
CY2020	us-gaap	Use Of Estimates UseOfEstimates	Use of Estimates in the Preparation of Financial StatementsThe preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of income and expenses during the reporting period. Such estimates also include the fair value of assets acquired and liabilities assumed resulting from the allocation of the purchase price related to business combinations consummated. Actual outcomes could differ from those estimates.
CY2020	us-gaap	Advertising Expense AdvertisingExpense	223000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	283000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	280000000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	401000000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	456000000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	464000000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	22000000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	24000000	USD
CY2018	us-gaap	Depreciation Nonproduction DepreciationNonproduction	23000000	USD
CY2020	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	379000000	USD
CY2019	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	432000000	USD
CY2018	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	441000000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	10	Segment
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	38000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	21000000	USD
CY2020	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	Accounting Standards to be Adopted in Future Years
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	22000000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	44000000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	22000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	44000000	USD
CY2020Q1	ppg	Accounts Receivable Credit Loss Expense Reversal Cares Act AccountsReceivableCreditLossExpenseReversalCARESAct	30000000	USD
CY2020Q4	ppg	Accounts Receivable Allowance For Credit Loss Cares Act AccountsReceivableAllowanceForCreditLossCARESAct	22000000	USD
CY2020	ppg	Consideration Paidfor Acquired Entities Netof Cash Acquired Debt Assumedand Other Adjustments ConsiderationPaidforAcquiredEntitiesNetofCashAcquiredDebtAssumedandOtherAdjustments	1000000	USD
CY2018	ppg	Consideration Paidfor Acquired Entities Netof Cash Acquired Debt Assumedand Other Adjustments ConsiderationPaidforAcquiredEntitiesNetofCashAcquiredDebtAssumedandOtherAdjustments	108000000	USD
CY2019	ppg	Consideration Paidfor Acquired Entities Netof Cash Acquired Debt Assumedand Other Adjustments ConsiderationPaidforAcquiredEntitiesNetofCashAcquiredDebtAssumedandOtherAdjustments	9000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2412000000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2479000000	USD
CY2020Q4	ppg	Receivables From Affiliates ReceivablesFromAffiliates	2000000	USD
CY2019Q4	ppg	Receivables From Affiliates ReceivablesFromAffiliates	3000000	USD
CY2020Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	312000000	USD
CY2019Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	274000000	USD
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	2726000000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	2756000000	USD
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1021000000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1047000000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	187000000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	197000000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	490000000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	431000000	USD
CY2020Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	37000000	USD
CY2019Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	35000000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	1735000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	1710000000	USD
CY2020Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	2259000000	USD
CY2019Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	2098000000	USD
CY2020Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	505000000	USD
CY2019Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	455000000	USD
CY2020Q4	ppg	Rebates Payable Current RebatesPayableCurrent	320000000	USD
CY2019Q4	ppg	Rebates Payable Current RebatesPayableCurrent	280000000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	85000000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	85000000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	46000000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	46000000	USD
CY2020Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	577000000	USD
CY2019Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	532000000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3792000000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3496000000	USD
CY2020Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.33
CY2019Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.34
CY2020Q4	ppg	Difference In Inventory Carrying Value DifferenceInInventoryCarryingValue	110000000	USD
CY2019Q4	ppg	Difference In Inventory Carrying Value DifferenceInInventoryCarryingValue	124000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7476000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7065000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4349000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4082000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3127000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2983000000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	6000000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	6000000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	267000000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	258000000	USD
CY2020	ppg	Equity In Undistributed Earnings Losses Of Subsidiaries EquityInUndistributedEarningsLossesOfSubsidiaries	8000000	USD
CY2019	ppg	Equity In Undistributed Earnings Losses Of Subsidiaries EquityInUndistributedEarningsLossesOfSubsidiaries	11000000	USD
CY2020	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	18000000	USD
CY2019	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	15000000	USD
CY2018	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	15000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	4070000000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	396000000	USD
CY2019	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	4000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4470000000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	534000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	5000000	USD
CY2020	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	103000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	5102000000	USD
CY2020Q4	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	1101000000	USD
CY2020Q4	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	1101000000	USD
CY2019Q4	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	1167000000	USD
CY2019Q4	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	1167000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	3003000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1753000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1250000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2549000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1585000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	964000000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	4104000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1753000000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2351000000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	3716000000	USD
CY2019Q4	ppg	Intangible Assets Accumulated Amortization Excluding Goodwill IntangibleAssetsAccumulatedAmortizationExcludingGoodwill	1585000000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2131000000	USD
CY2020	us-gaap	Impaired Intangible Asset Description ImpairedIntangibleAssetDescription	In conjunction with the 2020 assessment, the long-term forecast of net sales for a trademark in the Performance Coatings segment was reduced as a result of recent performance.
CY2020	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	38000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	138000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	136000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	143000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	175000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	175000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	165000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	150000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	140000000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	110000000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	58000000	USD
CY2019	us-gaap	Restructuring Reserve Translation Adjustment RestructuringReserveTranslationAdjustment	4000000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	224000000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	126000000	USD
CY2020	us-gaap	Restructuring Reserve Translation Adjustment RestructuringReserveTranslationAdjustment	21000000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	293000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	240000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	232000000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2000000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000000	USD
CY2020	ppg	Finance Lease Cost FinanceLeaseCost	3000000	USD
CY2019	ppg	Finance Lease Cost FinanceLeaseCost	3000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	243000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	235000000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	289000000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	17000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	15000000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	8000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	847000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	782000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	17000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	17000000	USD
CY2020Q4	ppg	Lease Rightof Use Asset LeaseRightofUseAsset	864000000	USD
CY2019Q4	ppg	Lease Rightof Use Asset LeaseRightofUseAsset	799000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	180000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	170000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	677000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	622000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	9000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	8000000	USD
CY2020Q4	ppg	Lease Liability LeaseLiability	869000000	USD
CY2019Q4	ppg	Lease Liability LeaseLiability	803000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	212000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	210000000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	4000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	227000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	219000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1000000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y1M6D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y2M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.024
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.030
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.070
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.094
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	199000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	4000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	160000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	3000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	124000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	3000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	98000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	79000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	282000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	2000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	942000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	14000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	85000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	2000000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	857000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12000000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	5346000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	5042000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	175000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	503000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5171000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4539000000	USD
CY2020Q3	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	119000000	USD
CY2020Q2	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	296000000	USD
CY2020	us-gaap	Repayments Of Medium Term Notes RepaymentsOfMediumTermNotes	1100000000	USD
CY2019Q3	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	595000000	USD
CY2019Q4	us-gaap	Repayments Of Debt RepaymentsOfDebt	634000000	USD
CY2018Q1	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	992000000	USD
CY2019Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	2200000000	USD
CY2019Q3	ppg	Line Of Credit Facility Additional Borrowing Capacity Available LineOfCreditFacilityAdditionalBorrowingCapacityAvailable	750000000	USD
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.011
CY2019Q3	ppg	Debt Instrument Covenant Total Indebtedness To Total Capitalization Ratio Maximum Percentage DebtInstrumentCovenantTotalIndebtednessToTotalCapitalizationRatioMaximumPercentage	0.60
CY2019Q3	ppg	Debt Instrument Covenant Acquisition For Consideration Minimum Threshold DebtInstrumentCovenantAcquisitionForConsiderationMinimumThreshold	1000000000	USD
CY2019Q3	ppg	Debt Instrument Covenant Total Indebtedness To Total Capitalization Ratio Maximum When Acquisition For Consideration Threshold Is Met Percentage DebtInstrumentCovenantTotalIndebtednessToTotalCapitalizationRatioMaximumWhenAcquisitionForConsiderationThresholdIsMetPercentage	0.65
CY2020	ppg	Debt Instrument Total Indebtedness To Total Capitalization Percentage DebtInstrumentTotalIndebtednessToTotalCapitalizationPercentage	0.46
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	175000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	733000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	307000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	298000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	982000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2851000000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	403000000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10000000	USD
CY2020Q4	ppg	Letters Of Credit Surety Bonds And Other Arrangements LettersOfCreditSuretyBondsAndOtherArrangements	134000000	USD
CY2019Q4	ppg	Letters Of Credit Surety Bonds And Other Arrangements LettersOfCreditSuretyBondsAndOtherArrangements	152000000	USD
CY2019Q4	us-gaap	Guaranty Assets GuarantyAssets	9000000	USD
CY2018Q1	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	560000000	USD
CY2020Q4	ppg	Fair Valueof Debt Instrument Designatedasa Hedgeof Net Investmentin Foreign Operations FairValueofDebtInstrumentDesignatedasaHedgeofNetInvestmentinForeignOperations	2400000000	USD
CY2019Q4	ppg	Fair Valueof Debt Instrument Designatedasa Hedgeof Net Investmentin Foreign Operations FairValueofDebtInstrumentDesignatedasaHedgeofNetInvestmentinForeignOperations	2200000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	5296000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	5031000000	USD
CY2020Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5875000000	USD
CY2019Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5363000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12000000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	403000000	USD
CY2019Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	11000000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1056000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1243000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1323000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	18000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1059000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1243000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1341000000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	236800000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	236900000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	243900000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	400000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	600000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	800000	shares
CY2020	ppg	Incremental Common Shares Attributable To Other Stock Compensation Plans IncrementalCommonSharesAttributableToOtherStockCompensationPlans	700000	shares
CY2019	ppg	Incremental Common Shares Attributable To Other Stock Compensation Plans IncrementalCommonSharesAttributableToOtherStockCompensationPlans	700000	shares
CY2018	ppg	Incremental Common Shares Attributable To Other Stock Compensation Plans IncrementalCommonSharesAttributableToOtherStockCompensationPlans	700000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1100000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1300000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1500000	shares
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	237900000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	238200000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	245400000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.46
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.25
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.43
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.07
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.47
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.25
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.50
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.44
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.22
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.40
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.07
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.45
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.22
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.47
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1400000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	900000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000000.0	shares
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	86000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7000000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15000000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	320000000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	296000000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	297000000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	338000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	397000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	308000000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	44000000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	13000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7000000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-45000000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-17000000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-6000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-47000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.013
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	45000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	291000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	392000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	353000000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.033
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.029
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.033
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.003
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.236
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.209
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.005
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	-0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.009
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Foreign EffectiveIncomeTaxRateReconciliationTaxContingenciesForeign	-0.004
CY2020	ppg	U.S.Current Tax Benefiton Foreign Exchange Realization U.S.CurrentTaxBenefitonForeignExchangeRealization	-0.014
CY2019	ppg	U.S.Current Tax Benefiton Foreign Exchange Realization U.S.CurrentTaxBenefitonForeignExchangeRealization	0
CY2018	ppg	U.S.Current Tax Benefiton Foreign Exchange Realization U.S.CurrentTaxBenefitonForeignExchangeRealization	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.009
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.007
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.010
CY2020	ppg	U.S.Tax Cost Tax Cutsand Jobs Act U.S.TaxCostTaxCutsandJobsAct	0
CY2019	ppg	U.S.Tax Cost Tax Cutsand Jobs Act U.S.TaxCostTaxCutsandJobsAct	0.003
CY2018	ppg	U.S.Tax Cost Tax Cutsand Jobs Act U.S.TaxCostTaxCutsandJobsAct	-0.025
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214
CY2019	ppg	Tax Cutsand Jobs Act Accounting Complete Income Tax Expense Benefit Foreign Derived Intangible Income TaxCutsandJobsActAccountingCompleteIncomeTaxExpenseBenefitForeignDerivedIntangibleIncome	14000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1000000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.236
CY2019	ppg	Nettaxchargefor Tax Cuts Jobs Act NettaxchargeforTaxCutsJobsAct	42000000	USD
CY2019	ppg	Taxchargeonunrepatriatedforeignearnings Taxchargeonunrepatriatedforeignearnings	20000000	USD
CY2019	ppg	Benefitfromreversalofexistingdeferredtaxliabilityonrepatriatedforeignearnings Benefitfromreversalofexistingdeferredtaxliabilityonrepatriatedforeignearnings	22000000	USD
CY2019	ppg	Tax Cuts And Jobs Act Of2017 Accounting Complete Income Tax Expense Benefit Global Intangible Low Tax Income TaxCutsAndJobsActOf2017AccountingCompleteIncomeTaxExpenseBenefitGlobalIntangibleLowTaxIncome	14000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	439000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	382000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Contingencies DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies	118000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Contingencies DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsContingencies	148000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	293000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	225000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	85000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	167000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	4000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	209000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	194000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	196000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	158000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1089000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	880000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	240000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	277000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	663000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	594000000	USD
CY2020Q4	ppg	Deferred Tax Liabilities Compensation And Benefits DeferredTaxLiabilitiesCompensationAndBenefits	37000000	USD
CY2019Q4	ppg	Deferred Tax Liabilities Compensation And Benefits DeferredTaxLiabilitiesCompensationAndBenefits	65000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	206000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	192000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	16000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1162000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1130000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	73000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	250000000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	193000000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	182000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	119000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	59000000	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	167000000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	158000000	USD
CY2020Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	4100000000	USD
CY2019Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	3600000000	USD
CY2020Q4	ppg	Number Of Ppg Subsidiaries NumberOfPpgSubsidiaries	290	subsidiary
CY2020Q4	ppg	Number Of Taxable Jurisdictions NumberOfTaxableJurisdictions	75	jurisdiction
CY2020Q4	ppg	Income Tax Potential Us Tax Cost For Repatriation Of Foreign Earnings IncomeTaxPotentialUSTaxCostForRepatriationOfForeignEarnings	40000000	USD
CY2019Q4	ppg	Income Tax Potential Us Tax Cost For Repatriation Of Foreign Earnings IncomeTaxPotentialUSTaxCostForRepatriationOfForeignEarnings	32000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	167000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	166000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	148000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	25000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	25000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	36000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	5000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	17000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	9000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	16000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	9000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	6000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	8000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	6000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	11000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	12000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	15000000	USD
CY2020	ppg	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	-1000000	USD
CY2019	ppg	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	-1000000	USD
CY2018	ppg	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	-5000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	175000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	167000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	166000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	153000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	18000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	17000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	3800000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	3400000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	2478000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	2223000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	1504000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	1449000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	2320000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	2176000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	1383000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	1449000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.021
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.028
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.015
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.026
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.028
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.037
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.032
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.050
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.054
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.054
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.026
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.018
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.012
CY2020	ppg	Impacton Net Periodic Pension Expense Next Twelve Months ImpactonNetPeriodicPensionExpenseNextTwelveMonths	13000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.048
CY2020Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.043
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	75000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	3216000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	2965000000	USD
CY2020	ppg	Defined Contribution Plan Contribution Rates As Percentage Of Employees Earnings DefinedContributionPlanContributionRatesAsPercentageOfEmployeesEarnings	0.06
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2020	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	50000000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	49000000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	47000000	USD
CY2020	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	11000000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	11000000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	13000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	64000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	70000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	63000000	USD
CY2020	ppg	Deferred Compensation Arrangement With Individual Compensation Expense Income DeferredCompensationArrangementWithIndividualCompensationExpenseIncome	25000000	USD
CY2019	ppg	Deferred Compensation Arrangement With Individual Compensation Expense Income DeferredCompensationArrangementWithIndividualCompensationExpenseIncome	21000000	USD
CY2018	ppg	Deferred Compensation Arrangement With Individual Compensation Expense Income DeferredCompensationArrangementWithIndividualCompensationExpenseIncome	-1000000	USD
CY2020	ppg	Deferred Compensation Arrangement With Individual Increase Decrease In Fair Value Of Investments DeferredCompensationArrangementWithIndividualIncreaseDecreaseInFairValueOfInvestments	24000000	USD
CY2019	ppg	Deferred Compensation Arrangement With Individual Increase Decrease In Fair Value Of Investments DeferredCompensationArrangementWithIndividualIncreaseDecreaseInFairValueOfInvestments	20000000	USD
CY2018	ppg	Deferred Compensation Arrangement With Individual Increase Decrease In Fair Value Of Investments DeferredCompensationArrangementWithIndividualIncreaseDecreaseInFairValueOfInvestments	-2000000	USD
CY2020Q4	us-gaap	Deferred Compensation Arrangement With Individual Recorded Liability DeferredCompensationArrangementWithIndividualRecordedLiability	138000000	USD
CY2019Q4	us-gaap	Deferred Compensation Arrangement With Individual Recorded Liability DeferredCompensationArrangementWithIndividualRecordedLiability	123000000	USD
CY2020Q4	ppg	Deferred Compensation Plan Marketable Securities DeferredCompensationPlanMarketableSecurities	103000000	USD
CY2019Q4	ppg	Deferred Compensation Plan Marketable Securities DeferredCompensationPlanMarketableSecurities	85000000	USD
CY2019	us-gaap	Litigation Settlement Amount Awarded To Other Party LitigationSettlementAmountAwardedToOtherParty	25000000	USD
CY2020	us-gaap	Litigation Settlement Amount Awarded To Other Party LitigationSettlementAmountAwardedToOtherParty	17000000	USD
CY2019	us-gaap	Litigation Settlement Amount Awarded To Other Party LitigationSettlementAmountAwardedToOtherParty	25000000	USD
CY2020Q4	us-gaap	Insurance Settlements Receivable Current InsuranceSettlementsReceivableCurrent	17000000	USD
CY2019Q4	us-gaap	Insurance Settlements Receivable Current InsuranceSettlementsReceivableCurrent	25000000	USD
CY2020Q4	ppg	Other Reserves OtherReserves	190000000	USD
CY2020Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	300000000	USD
CY2019Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	304000000	USD
CY2020Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	99000000	USD
CY2019Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	62000000	USD
CY2020	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	38000000	USD
CY2019	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	77000000	USD
CY2018	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	78000000	USD
CY2020	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	60000000	USD
CY2019	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	77000000	USD
CY2018	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	64000000	USD
CY2020Q4	ppg	Historical Environmental Remediation Expense Lower Limit HistoricalEnvironmentalRemediationExpenseLowerLimit	5000000	USD
CY2020Q4	ppg	Historical Environmental Remediation Expense Upper Limit HistoricalEnvironmentalRemediationExpenseUpperLimit	35000000	USD
CY2020	ppg	Remediation Period RemediationPeriod	P10Y
CY2020Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	10000000
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1200000000	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	251174399	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	15877364	shares
CY2018	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	564399	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	235861434	shares
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2722800	shares
CY2019	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	2541836	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	235680470	shares
CY2020	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	1005795	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	236686265	shares
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.10
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.98
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.86
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-292000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	129000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	71000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-130000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-249000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-24000000	USD
CY2020	ppg	Translation Adjustments Other Than Translation Of Foreign Denominated Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfForeignDenominatedBalanceSheetTaxBenefitExpense	5000000	USD
CY2019	ppg	Translation Adjustments Other Than Translation Of Foreign Denominated Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfForeignDenominatedBalanceSheetTaxBenefitExpense	7000000	USD
CY2018	ppg	Translation Adjustments Other Than Translation Of Foreign Denominated Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfForeignDenominatedBalanceSheetTaxBenefitExpense	9000000	USD
CY2020	ppg	Translation Adjustments Other Than Translation Of Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfBalanceSheetTaxBenefitExpense	6000000	USD
CY2019	ppg	Translation Adjustments Other Than Translation Of Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfBalanceSheetTaxBenefitExpense	-19000000	USD
CY2018	ppg	Translation Adjustments Other Than Translation Of Balance Sheet Tax Benefit Expense TranslationAdjustmentsOtherThanTranslationOfBalanceSheetTaxBenefitExpense	4000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	70000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	57000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-34000000	USD
CY2020Q4	ppg	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	336000000	USD
CY2019Q4	ppg	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	266000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	2000000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	5000000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	7000000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	33000000	USD
CY2020	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	7000000	USD
CY2019	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	8000000	USD
CY2018	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	10000000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	11000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	16000000	USD
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	48000000	USD
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	63000000	USD
CY2018	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	55000000	USD
CY2020	us-gaap	Other Income OtherIncome	68000000	USD
CY2019	us-gaap	Other Income OtherIncome	89000000	USD
CY2018	us-gaap	Other Income OtherIncome	114000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	6900000	shares
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	44000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	39000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	37000000	USD
CY2020	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	10000000	USD
CY2019	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	9000000	USD
CY2018	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	8000000	USD
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P10Y
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Other Share Increase Decrease In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOtherShareIncreaseDecreaseInPeriodWeightedAverageExercisePrice	119.52
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Other Share Increase Decrease In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOtherShareIncreaseDecreaseInPeriodWeightedAverageExercisePrice	109.74
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Other Share Increase Decrease In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOtherShareIncreaseDecreaseInPeriodWeightedAverageExercisePrice	115.98
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.016
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.026
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.029
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.015
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.016
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.017
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.200
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.200
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.210
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	104.08
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	21.93
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	22.50
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	25.27
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3409753	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	96.93
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y1M6D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	125000000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	665485	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	119.52
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	658636	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	82.12
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	45320	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3371282	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	38000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	243000000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	102000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	104.18
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y2M12D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	135000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	3264920	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	103.83
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y2M12D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	132000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1723872	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	93.56
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y3M18D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	87000000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	31000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	19000000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3757000000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	54000000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	61000000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	15000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	7000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	9000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	4000000	USD
CY2020	ppg	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Of Awards Vested ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueOfAwardsVested	11000000	USD
CY2019	ppg	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Of Awards Vested ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueOfAwardsVested	12000000	USD
CY2018	ppg	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Of Awards Vested ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueOfAwardsVested	10000000	USD
CY2019Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingNumber	611542	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	109.30
CY2019Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingIntrinsicValue	67000000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	211639	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	117.26
CY2020	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Released In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleasedInPeriod	212825	shares
CY2020	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Adjustment Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentWeightedAverageGrantDateFairValue	119.06
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	18427	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	120.51
CY2020Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingNumber	591929	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	113.74
CY2020Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingIntrinsicValue	67000000	USD
CY2020Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingNumber	557734	shares
CY2020Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue	113.71
CY2020Q4	ppg	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	62000000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3377000000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3015000000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3685000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13834000000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1908000000	USD
CY2020Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1703000000	USD
CY2020Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2026000000	USD
CY2020Q4	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2140000000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	7777000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	243000000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	99000000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	442000000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	272000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1056000000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3000000	USD
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2020Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	442000000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	272000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1059000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.03
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.42
CY2020Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.87
CY2020Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.15
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.46
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2020Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.87
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.02
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.47
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.42
CY2020Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.86
CY2020Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.14
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.44
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.02
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.86
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.45
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3624000000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1000000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4024000000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3826000000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3672000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15146000000	USD
CY2019Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2073000000	USD
CY2019Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2288000000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2181000000	USD
CY2019Q4	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2111000000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	8653000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	312000000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	270000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	366000000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	295000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1243000000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2000000	USD
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-3000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	312000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	272000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	367000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	292000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1243000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.32
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.14
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.55
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.24
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.25
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.01
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.55
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.25
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.31
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.13
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.54
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.23
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	5.22
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.14
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.54
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.22
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.22
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13834000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15146000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15374000000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	10	Segment
CY2020Q4	ppg	Number Of Reportable Business Segments NumberOfReportableBusinessSegments	2	Segment
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13834000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15146000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15374000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	2109000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	2271000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	2118000000	USD
CY2020	ppg	Corporate Expenditure CorporateExpenditure	226000000	USD
CY2019	ppg	Corporate Expenditure CorporateExpenditure	198000000	USD
CY2018	ppg	Corporate Expenditure CorporateExpenditure	141000000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-115000000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-100000000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-95000000	USD
CY2020	us-gaap	Restructuring Costs RestructuringCosts	224000000	USD
CY2019	us-gaap	Restructuring Costs RestructuringCosts	222000000	USD
CY2018	us-gaap	Restructuring Costs RestructuringCosts	75000000	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	93000000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2018	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	15000000	USD
CY2020	ppg	Accounts Receivable Credit Loss Expense Reversal Cares Act AccountsReceivableCreditLossExpenseReversalCARESAct	30000000	USD
CY2019	ppg	Accounts Receivable Credit Loss Expense Reversal Cares Act AccountsReceivableCreditLossExpenseReversalCARESAct	0	USD
CY2018	ppg	Accounts Receivable Credit Loss Expense Reversal Cares Act AccountsReceivableCreditLossExpenseReversalCARESAct	0	USD
CY2020	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	26000000	USD
CY2019	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	61000000	USD
CY2018	ppg	Environmental Remediation Charge EnvironmentalRemediationCharge	77000000	USD
CY2020	us-gaap	Unusual Or Infrequent Item Loss Gross UnusualOrInfrequentItemLossGross	17000000	USD
CY2019	us-gaap	Unusual Or Infrequent Item Loss Gross UnusualOrInfrequentItemLossGross	0	USD
CY2018	us-gaap	Unusual Or Infrequent Item Loss Gross UnusualOrInfrequentItemLossGross	0	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9000000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	17000000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	6000000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7000000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	0	USD
CY2019	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	12000000	USD
CY2020	ppg	Costsrelatedtocustomerassortmentchange Costsrelatedtocustomerassortmentchange	0	USD
CY2018	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	24000000	USD
CY2019	ppg	Costsrelatedtocustomerassortmentchange Costsrelatedtocustomerassortmentchange	0	USD
CY2018	ppg	Costsrelatedtocustomerassortmentchange Costsrelatedtocustomerassortmentchange	18000000	USD
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	26000000	USD
CY2020	ppg	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	1362000000	USD
CY2019	ppg	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	1661000000	USD
CY2018	ppg	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	1693000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	509000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	511000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	497000000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	11000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	16000000	USD
CY2020Q4	us-gaap	Assets Assets	19556000000	USD
CY2019Q4	us-gaap	Assets Assets	17708000000	USD
CY2018Q4	us-gaap	Assets Assets	16015000000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	120000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	129000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	132000000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	1473000000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	1056000000	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	789000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13834000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15146000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	15374000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	2109000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	2271000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	2118000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3127000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2983000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2805000000	USD
CY2020Q1	ppg	Accounts Receivable Credit Loss Expense Reversal Cares Act AccountsReceivableCreditLossExpenseReversalCARESAct	30000000	USD

Files In Submission

Name	View Source	Status
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$PPG
PPG Industries Inc Stock $ppg

2020 Q4 Form 10-K Financial Statement

#000007987921000008 Filed on February 18, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PPG PPG Industries Inc Stock $ppg

2020 Q4 Form 10-K Financial Statement

#000007987921000008 Filed on February 18, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$PPG
PPG Industries Inc Stock $ppg