PPG Industries (PPG) 10-Q 20 Oct 20 2020 Q3 Quarterly report Financial data

Cover

Cover	9 Months Ended
	Sep. 30, 2020shares
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	1-1687
Entity Registrant Name	PPG INDUSTRIES INC
Entity Tax Identification Number	25-0730780
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	One PPG Place
Entity Address, City or Town	Pittsburgh
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15272
City Area Code	412
Local Phone Number	434-3131
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	236,204,417
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000079879
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $1.66 2/3
Trading Symbol	PPG
Security Exchange Name	NYSE
0.875% Notes Due 2022
Entity Information [Line Items]
Title of 12(b) Security	0.875% Notes due 2022
Trading Symbol	PPG 22
Security Exchange Name	NYSE
0.875% Notes Due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.875% Notes due 2025
Trading Symbol	PPG 25
Security Exchange Name	NYSE
1.400% Notes Due 2027
Entity Information [Line Items]
Title of 12(b) Security	1.400% Notes due 2027
Trading Symbol	PPG 27
Security Exchange Name	NYSE

Condensed Consolidated Statemen

Condensed Consolidated Statement of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 3,685	$ 3,826	$ 10,077	$ 11,474
Cost of sales, exclusive of depreciation and amortization	2,026	2,181	5,637	6,542
Selling, general and administrative	836	887	2,507	2,710
Depreciation	96	99	280	276
Amortization	36	34	104	101
Research and development, net	92	107	279	323
Interest expense	34	33	107	99
Interest income	(4)	(10)	(18)	(23)
Business restructuring, net	0	2	172	175
Other charges	21	26	45	69
Other income	(24)	(14)	(53)	(61)
Income before income taxes	572	481	1,017	1,263
Income tax expense	124	109	224	297
Income from continuing operations	448	372	793	966
Income from discontinued operations, net of tax	0	1	3	3
Net income attributable to controlling and noncontrolling interests	448	373	796	969
Net income attributable to noncontrolling interests	6	6	9	18
Net income (attributable to PPG)	442	367	787	951
Income from continuing operations, net of tax	442	366	784	948
Income from discontinued operations, net of tax	$ 0	$ 1	$ 3	$ 3
Income (Loss) from Continuing Operations, Per Basic Share	$ 1.87	$ 1.55	$ 3.32	$ 4
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0	0.01	0.01
Earnings Per Share, Basic	1.87	1.55	3.33	4.01
Income (Loss) from Continuing Operations, Per Diluted Share	1.86	1.54	3.30	3.98
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	0	0.01	0.01
Earnings Per Share, Diluted	$ 1.86	$ 1.54	$ 3.31	$ 3.99

Condensed Consolidated Statem_2

Condensed Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income attributable to controlling and noncontrolling interests	$ 448	$ 373	$ 796	$ 969
Other comprehensive income/(loss), net of tax:
Defined benefit pension and other postretirement benefits	3	(2)	9	4
Unrealized foreign currency translation adjustments	136	(103)	(453)	(37)
Derivative financial instruments	0	1	0	0
Other comprehensive income/(loss), net of tax	139	(104)	(444)	(33)
Total comprehensive income	587	269	352	936
Less: amounts attributable to noncontrolling interests:
Net income	(6)	(6)	(9)	(18)
Unrealized foreign currency translation adjustments	(2)	6	6	5
Comprehensive income attributable to PPG	$ 579	$ 269	$ 349	$ 923

Condensed Consolidated Balance

Condensed Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 2,008	$ 1,216
Short-term investments	87	57
Receivables, net	2,843	2,756
Inventories	1,672	1,710
Other current assets	392	431
Total current assets	7,002	6,170
Property, plant and equipment (net of accumulated depreciation of $4,281 and $4,082)	2,897	2,983
Goodwill	4,419	4,470
Identifiable intangible assets, net	1,930	2,131
Deferred income taxes	257	220
Investments	267	258
Operating Lease, Right-of-Use Asset	829	782
Other assets	699	694
Total	18,300	17,708
Current liabilities:
Accounts payable and accrued liabilities	3,482	3,496
Restructuring reserves	282	196
Short-term debt and current portion of long-term debt	675	513
Operating Lease, Liability, Current	174	170
Total current liabilities	4,613	4,375
Long-term debt	4,828	4,539
Operating Lease, Liability, Noncurrent	670	622
Accrued pensions	711	745
Other postretirement benefits	653	661
Deferred income taxes	436	452
Other liabilities	965	911
Total liabilities	12,876	12,305
Shareholders’ equity:
Common stock	969	969
Additional paid-in capital	980	950
Retained earnings	19,325	18,906
Treasury stock, at cost	(13,176)	(13,191)
Accumulated other comprehensive loss	(2,788)	(2,350)
Total PPG shareholders’ equity	5,310	5,284
Noncontrolling interests	114	119
Total shareholders’ equity	5,424	5,403
Total	$ 18,300	$ 17,708

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Property, accumulated depreciation	$ 4,281	$ 4,082

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Shareholders' Equity (Unaudited) Statement - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss)/Income	Total PPG	Non-controlling Interests
Beginning balance at Dec. 31, 2018	$ 4,732	$ 969	$ 788	$ 18,131	$ (12,958)	$ (2,300)	$ 4,630	$ 102
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	317			312			312	5
Other comprehensive income, net of tax	75					76	76	(1)
Cash dividends	(113)			(113)			(113)
Purchase of treasury stock	(175)				(175)		(175)
Issuance of treasury stock	184		121		63		184
Stock-based compensation activity	(10)		(10)				(10)
Ending balance at Mar. 31, 2019	5,010	969	899	18,330	(13,070)	(2,224)	4,904	106
Beginning balance at Dec. 31, 2018	4,732	969	788	18,131	(12,958)	(2,300)	4,630	102
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	969
Other comprehensive income, net of tax	(33)
Ending balance at Sep. 30, 2019	5,355	969	925	18,735	(13,054)	(2,328)	5,247	108
Beginning balance at Mar. 31, 2019	5,010	969	899	18,330	(13,070)	(2,224)	4,904	106
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	279			272			272	7
Other comprehensive income, net of tax	(4)					(6)	(6)	2
Cash dividends	(114)			(114)			(114)
Issuance of treasury stock	16		7		9		16
Stock-based compensation activity	7		7				7
Dividends paid on subsidiary common stock to noncontrolling interests	(5)							(5)
Reductions in noncontrolling interests	(2)							(2)
Ending balance at Jun. 30, 2019	5,187	969	913	18,488	(13,061)	(2,230)	5,079	108
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	373			367			367	6
Other comprehensive income, net of tax	(104)					(98)	(98)	(6)
Cash dividends	(120)			(120)			(120)
Issuance of treasury stock	12		5		7		12
Stock-based compensation activity	7		7				7
Ending balance at Sep. 30, 2019	5,355	969	925	18,735	(13,054)	(2,328)	5,247	108
Beginning balance at Dec. 31, 2019	5,403	969	950	18,906	(13,191)	(2,350)	5,284	119
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	248			243			243	5
Other comprehensive income, net of tax	(702)					(692)	(692)	(10)
Cash dividends	(120)			(120)			(120)
Issuance of treasury stock	16		12		4		16
Stock-based compensation activity	(8)		(8)				(8)
Ending balance at Mar. 31, 2020	4,837	969	954	19,029	(13,187)	(3,042)	4,723	114
Beginning balance at Dec. 31, 2019	5,403	969	950	18,906	(13,191)	(2,350)	5,284	119
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	796
Other comprehensive income, net of tax	(444)
Ending balance at Sep. 30, 2020	5,424	969	980	19,325	(13,176)	(2,788)	5,310	114
Beginning balance at Mar. 31, 2020	4,837	969	954	19,029	(13,187)	(3,042)	4,723	114
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	100			102			102	(2)
Other comprehensive income, net of tax	119					117	117	2
Cash dividends	(121)			(121)			(121)
Issuance of treasury stock	5		2		3		5
Stock-based compensation activity	6		6				6
Dividends paid on subsidiary common stock to noncontrolling interests	(3)							(3)
Reductions in noncontrolling interests	(5)							(5)
Ending balance at Jun. 30, 2020	4,938	969	962	19,010	(13,184)	(2,925)	4,832	106
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the controlling and noncontrolling interests	448			442			442	6
Other comprehensive income, net of tax	139					137	137	2
Cash dividends	(127)			(127)			(127)
Issuance of treasury stock	18		10		8		18
Stock-based compensation activity	8		8				8
Dividends paid on subsidiary common stock to noncontrolling interests	(1)							(1)
Reductions in noncontrolling interests	1							1
Ending balance at Sep. 30, 2020	$ 5,424	$ 969	$ 980	$ 19,325	$ (13,176)	$ (2,788)	$ 5,310	$ 114

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Cash Flows - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net income attributable to the controlling and noncontrolling interests	$ 796	$ 969
Income from discontinued operations, net of tax	(3)	(3)
Income from continuing operations	793	966
Adjustments to reconcile net income to cash from operations:
Depreciation and amortization	384	377
Pension expense	29	38
Debt extinguishment charge	7	0
Environmental remediation charges	12	61
Business restructuring, net	172	175
Stock-based compensation expense	29	28
Equity affiliate income, net of dividends	(2)	(4)
Deferred income taxes	4	(26)
Cash contributions to pension plans	(7)	(8)
Cash used for restructuring actions	(98)	(35)
Change in certain asset and liability accounts (net of acquisitions):
Receivables	(63)	(188)
Inventories	36	(49)
Other current assets	26	(70)
Accounts payable and accrued liabilities	(23)	35
Taxes and interest payable	(72)	59
Noncurrent assets and liabilities, net	19	(52)
Other	(87)	(40)
Cash from operating activities - continuing operations	1,163	1,275
Cash from/(used for) operating activities - discontinued operations	1	(4)
Cash from operating activities	1,164	1,271
Investing activities:
Capital expenditures	(170)	(224)
Business acquisitions, net of cash balances acquired	(45)	(564)
Payments for the settlement of cross currency swap contracts	(5)	(8)
Proceeds from the settlement of cross currency swap contracts	21	26
Other	8	22
Cash used for investing activities	(191)	(748)
Financing activities:
Net change in borrowing with maturities of three months or less	(7)	6
Proceeds on commercial paper and short-term debt, net of payments	1,397	0
Repayment of Term Loan	(1,000)	0
Proceeds from revolving credit facility	800	0
Repayment of revolving credit facility	(800)	0
Proceeds from the issuance of debt, net of discounts and fees	415	595
Repayment of long-term debt	(503)	(3)
Repayment of acquired debt	12	23
Purchase of treasury stock	0	(175)
Issuance of treasury stock	23	32
Dividends paid on PPG common stock	(368)	(347)
Payments related to tax withholding on stock-based compensation awards	(11)	(15)
Other	(39)	(29)
Cash (used for)/from financing activities	(105)	41
Effect of currency exchange rate changes on cash and cash equivalents	(76)	(34)
Net increase in cash and cash equivalents	792	530
Cash and cash equivalents, beginning of period	1,216	902
Cash and cash equivalents, end of period	2,008	1,432
Interest paid, net of amount capitalized	121	93
Taxes paid, net of refunds	$ 293	$ 282
Reissuance of common stock for business acquisition	0	164

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements included herein are unaudited and have been prepared following the requirements of the Securities and Exchange Commission (the "SEC") and accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim reporting. Under these rules, certain footnotes and other financial information that are normally required for annual financial statements can be condensed or omitted. These statements include all adjustments, consisting only of normal, recurring adjustments, necessary for a fair presentation of the financial position and shareholders' equity of PPG as of September 30, 2020, and the results of its operations and cash flows for the three and nine months ended September 30, 2020 and 2019. All intercompany balances and transactions have been eliminated. Material subsequent events are evaluated through the report issuance date and disclosed where applicable. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in PPG's 2019 Annual Report on Form 10-K (the "2019 Form 10-K"). Net sales, expenses, assets and liabilities can vary during each quarter of the year. Accordingly, the results of operations for the three and nine months ended September 30, 2020 and the trends in these unaudited condensed consolidated financial statements may not necessarily be indicative of the results to be expected for the full year.

New Accounting Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
New Accounting Standards	New Accounting Standards Accounting Standards Adopted in 2020 Effective January 1, 2020, PPG adopted Accounting Standards Update (“ASU”) No. 2016-13, "Financial Instruments - Credit Losses." This ASU requires an organization to measure all expected credit losses for financial assets, including trade receivables, held at the reporting date based on historical experience, current conditions, and reasonable and supportable information. Organizations will now use forward-looking information to better estimate their credit losses. PPG adopted this ASU using a modified retrospective approach. Under this method of adoption, PPG determined that there was no cumulative-effect adjustment to beginning Retained earnings on the condensed consolidated balance sheet. Adoption of this standard did not impact PPG’s Income before income taxes and had no impact on the condensed consolidated statement of cash flows. See Note 3, “Allowance for Credit Losses” for further details. Effective January 1, 2020, PPG adopted ASU No. 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). PPG adopted this ASU prospectively. Under this method of adoption, PPG determined there was not a material impact to the condensed consolidated balance sheet, Income before income taxes or the condensed consolidated statement of cash flows. Accounting Standards to be Adopted in Future Years In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-06, “Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40).” This ASU simplifies the accounting for convertible debt instruments by removing certain accounting separation models as well as the accounting for debt instruments with embedded conversion features that are not required to be accounted for as derivative instruments. The ASU also updates and improves the consistency of earnings per share calculations for convertible instruments. The amendments in this ASU are effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. PPG is currently assessing the potential impacts this ASU may have on its consolidated financial position, results of operations and cash flows. In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform." This ASU provides optional guidance for a limited period of time to ease potential accounting impacts associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate ("LIBOR"). The amendments in this ASU apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. The amendments in this ASU are effective through December 31, 2022. PPG is currently assessing the potential impacts this ASU may have on its consolidated financial position, results of operations and cash flows.

Credit Losses

Credit Losses	3 Months Ended
	Jun. 30, 2020
Credit Loss [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses All trade receivables are reported on the condensed consolidated balance sheet at the outstanding principal amount adjusted for any allowance for credit losses and any charge offs. PPG provides an allowance for credit losses to reduce trade receivables to their estimated net realizable value equal to the amount that is expected to be collected. This allowance is estimated based on historical collection experience, current regional economic and market conditions, the aging of accounts receivable, assessments of current creditworthiness of customers, and forward-looking information. The use of forward-looking information is based on certain macroeconomic and microeconomic indicators including, but not limited to, regional business environment risk, political risk, and commercial and financing risks. PPG reviews its reserves for credit losses on a quarterly basis to ensure its reserves for credit losses reflect regional risk trends as well as current and future global operating conditions. The following table summarizes the activity for the allowance for credit losses for the nine months ended September 30, 2020: ($ in millions) Trade Receivables Allowance for Credit Losses January 1, 2020 $22 Current-period provision for credit losses 41 Trade receivables written off as uncollectible, net of recoveries (15) Foreign currency impact (1) September 30, 2020 $47

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Acquisitions	Acquisitions On March 2, 2020, PPG completed the acquisition of Alpha Coating Technologies, LLC, a manufacturer of powder coatings for light industrial applications and heat sensitive substrates. The pro-forma impact on PPG's sales and results of operations, including the pro-forma effect of events that are directly attributable to the acquisition, was not significant. The results of this business since the date of acquisition have been reported within the industrial coatings business within the Industrial Coatings reportable business segment. On January 31, 2020, PPG completed the acquisition of Industria Chimica Reggiana S.p.A ("ICR"), an Italian manufacturer of automotive refinish products. The pro-forma impact on PPG's sales and results of operations, including the pro-forma effect of events that are directly attributable to the acquisition, was not significant. The results of this business since the date of acquisition have been reported within the automotive refinish coatings business within the Performance Coatings reportable business segment. On August 14, 2019, PPG completed the acquisition of Dexmet Corporation, a specialty materials manufacturer. Headquartered in Wallingford, Connecticut, Dexmet Corporation specializes in customized, highly-engineered, expanded and perforated metal foils and polymers used for structural applications. The pro-forma impact on PPG's sales and results of operations, including the pro forma effect of events that are directly attributable to the acquisition, was not significant. The results of this business since the date of acquisition have been reported within the aerospace coatings business within the Performance Coatings reportable segment. On April 16, 2019, PPG completed the acquisition of Hemmelrath, a global manufacturer of coatings for automotive original equipment manufacturers ("OEMs"). The pro-forma impact on PPG's sales and results of operations, including the pro-forma effect of events that are directly attributable to the acquisition, was not significant. The results of this business since the date of acquisition have been reported within the automotive OEM coatings business within the Industrial Coatings reportable business segment. On March 1, 2019, PPG completed the acquisition of Whitford Worldwide Company ("Whitford"), a global manufacturer that specializes in low-friction and nonstick coatings for industrial applications and consumer products. Whitford operates 10 manufacturing facilities globally. The pro-forma impact on PPG's sales and results of operations, including the proforma effect of events that are directly attributable to the acquisition, was not significant. The results of this business since the date of acquisition have been reported within the industrial coatings business within the Industrial Coatings reportable business segment.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Inventories	Inventories ($ in millions) September 30, 2020 December 31, 2019 Finished products $1,009 $1,047 Work in process 188 197 Raw materials 440 431 Supplies 35 35 Total Inventories $1,672 $1,710 Most U.S. inventories are valued using the last-in, first-out method. These inventories represented approximately 34% of total inventories at September 30, 2020 and December 31, 2019. If the first-in, first-out method of inventory valuation had been used, inventories would have been $111 million and $124 million higher as of September 30, 2020 and December 31, 2019, respectively.

Goodwill and Other Identifiable

Goodwill and Other Identifiable Intangible Assets	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Identifiable Intangible Assets	Goodwill and Other Identifiable Intangible Assets The Company tests indefinite-lived intangible assets and goodwill for impairment by either performing a qualitative evaluation or a quantitative test at least annually, or more frequently if an indication of impairment arises. The qualitative evaluation is an assessment of factors to determine whether it is more likely than not that the fair value of a reporting unit or asset is less than its carrying amount. Throughout the year, the Company has evaluated the effects of the COVID-19 pandemic and its negative impact on the global economy on each of the Company’s reporting units and indefinite-lived intangible assets. Management reviews key assumptions, including revisions of projected future revenues for reporting units and the results of the previous annual impairment testing performed during the fourth quarter of 2019. The Company did not identify an indication of impairment for each of its reporting units and indefinite-lived intangible assets. Although it was determined that a triggering event had not occurred as of September 30, 2020, the Company will continue to monitor the impacts of the COVID-19 pandemic on the Company and significant changes in key assumptions that could result in future period impairment charges. The change in the carrying amount of goodwill attributable to each reportable segment for the nine months ended September 30, 2020 was as follows: ($ in millions) Performance Industrial Total January 1, 2020 $3,442 $1,028 $4,470 Acquisitions, including purchase accounting adjustments 11 15 26 Foreign currency impact (82) 5 (77) September 30, 2020 $3,371 $1,048 $4,419 A summary of the carrying value of the Company's identifiable intangible assets is as follows: September 30, 2020 December 31, 2019 ($ in millions) Gross Accumulated Net Gross Accumulated Net Indefinite-Lived Identifiable Intangible Assets Trademarks $1,064 N/A $1,064 $1,167 N/A $1,167 Definite-Lived Identifiable Intangible Assets Acquired technology $718 ($572) $146 $710 ($549) $161 Customer-related 1,574 (949) 625 1,578 (885) 693 Trade names 208 (120) 88 210 (111) 99 Other 49 (42) 7 51 (40) 11 Total Definite Lived Intangible Assets $2,549 ($1,683) $866 $2,549 ($1,585) $964 Total Identifiable Intangible Assets $3,613 ($1,683) $1,930 $3,716 ($1,585) $2,131 The Company’s identifiable intangible assets with definite lives are being amortized over their estimated useful lives. As of September 30, 2020, estimated future amortization expense of identifiable intangible assets is as follows: ($ in millions) Future Amortization Expense Remaining three months of 2020 $35 2021 $125 2022 $125 2023 $110 2024 $90 2025 $85 Thereafter $296

Business Restructuring

Business Restructuring	9 Months Ended
	Sep. 30, 2020
Restructuring and Related Activities [Abstract]
Business Restructuring	Business Restructuring The Company records restructuring liabilities that represent charges incurred in connection with consolidations of certain operations, including operations from acquisitions, as well as headcount reduction programs. These charges consist primarily of severance costs and certain other cash costs. As a result of these programs, the Company will also incur incremental non-cash accelerated depreciation expense for certain assets due to their reduced expected asset life. These charges are not allocated to the Company’s reportable business segments. Refer to Note 17 Reportable Business Segment Information for additional information. 2020 Restructuring Program In June 2020, the Company approved a business restructuring plan which included actions to reduce its global cost structure. The program addresses weakened global economic conditions stemming from the COVID-19 pandemic and related pace of recovery in a few end-use markets along with further opportunities to optimize supply chain and functional costs. The plan includes a voluntary separation program that was offered in the U.S. and Canada. A pretax restructuring charge of $176 million was recorded in PPG's second quarter 2020 financial results. This charge represents employee severance and other cash costs. The majority of restructuring actions are expected to be completed by the end of 2020 with the remainder of the actions expected to be completed in 2021. 2019 and 2018 Restructuring Programs As a result of the COVID-19 pandemic, the Company expects delays in the timing of certain previously recorded restructuring actions. Program completion dates may differ from the originally targeted timeline, as noted below. In June 2019, the Company approved a business restructuring plan which included actions to reduce its global cost structure. The program is the result of a comprehensive internal operational assessment to identify further opportunities to improve the profitability of the overall business portfolio. This program includes further manufacturing optimization; targeted pruning of low-profit business in certain regions; exiting certain smaller product lines that are not meeting profitability objectives; reorganization of certain business unit cost structures based on the current economic climate; and certain redundancy actions related to recent acquisitions. The majority of restructuring actions are now expected to be completed by the end of the first quarter 2021 with the remainder of the actions expected to be completed in 2022. In April 2018, the Company approved a business restructuring plan which included actions to reduce its global cost structure. The program was in response to the impacts of customer assortment changes in our U.S. architectural coatings business during the first quarter 2018 and sustained, elevated raw material inflation. The program aims to further right-size employee headcount and production capacity in certain businesses based on product demand, as well as reductions in various global functional and administrative costs. The majority of restructuring actions are now expected to be completed by the end of the fourth quarter of 2020. The following table summarizes the reserve activity for the nine months ended September 30, 2020 and 2019: Total Reserve ($ in millions) 2020 2019 January 1 $224 $110 Approved restructuring actions (a) 198 194 Release of prior reserves and other adjustments (26) (19) Cash payments (98) (35) Foreign currency impact 10 (8) September 30 $308 $242

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Borrowings	Borrowings In August 2020, PPG completed a public offering of $100 million aggregate principal amount of 3.75% notes due March 2028. These notes were issued as additional notes pursuant to PPG’s existing shelf registration statement and pursuant to the Indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee, as supplemented (the "Indenture"), which is is the same Indenture pursuant to which we previously issued $700 million in aggregate principle amount of our 3.75% notes due March 2028 on February 27, 2018. The new notes will be treated as a single series of notes with the existing notes under indenture, have the same CUSIP number as the existing notes, and be fungible with the existing notes for US federal income tax purposes. The Indenture governing these notes contains covenants that limit the Company’s ability to, among other things, incur certain liens securing indebtedness, engage in certain sale-leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all the Company’s assets. The terms of these notes also require the Company to make an offer to repurchase the notes upon a Change of Control Triggering Event (as defined in the Indenture) at a price equal to 101% of their principal amount plus accrued and unpaid interest. The Company may issue additional debt from time to time pursuant to the Indenture. The aggregate cash proceeds from the notes, including the premium received at issuance, net of fees, was $119 million. In June 2020, PPG completed an early redemption of the $500 million 3.6% notes due November 2020 using proceeds from the May 2020 public offering and cash on hand. The Company recorded a charge of $7 million in the second quarter for the debt redemption which consists of the aggregate make-whole cash premium of $6 million and a balance of unamortized fees and discounts of $1 million related to the debt redeemed. In May 2020, PPG completed a public offering of $300 million aggregate principal amount of 2.55% notes due 2030. These notes were issued pursuant to PPG’s existing shelf registration statement and pursuant to the Indenture. The Indenture governing these notes contains covenants that limit the Company’s ability to, among other things, incur certain liens securing indebtedness, engage in certain sale-leaseback transactions, and enter into certain consolidations, mergers, conveyances, transfers or leases of all or substantially all the Company’s assets. The terms of these notes also require the Company to make an offer to repurchase the notes upon a Change of Control Triggering Event (as defined in the Indenture) at a price equal to 101% of their principal amount plus accrued and unpaid interest. The Company may issue additional debt from time to time pursuant to the Indenture. The aggregate cash proceeds from the notes, net of discounts and fees, was $296 million. In April 2020, PPG entered into a $1.5 billion 364-Day Term Loan Credit Agreement (the “Term Loan”). The Term Loan contains covenants that are consistent with those in the Credit Agreement described below and that are usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company’s ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. In September 2020, PPG repaid $1.0 billion of the Term Loan using cash on hand. The remaining Term Loan terminates and all amounts outstanding are payable on April 13, 2021. In August 2019, PPG amended and restated its five The Term Loan and Credit Agreement require the Company to maintain a ratio of Total Indebtedness to Total Capitalization, as defined in the Term Loan and Credit Agreement, of 60% or less; provided, that for any fiscal quarter in which the Company has made an acquisition for consideration in excess of $1 billion and for the next five fiscal quarters thereafter, the ratio of Total Indebtedness to Total Capitalization may not exceed 65% at any time. As of September 30, 2020, Total Indebtedness to Total Capitalization as defined under the Credit Agreement and Term Loan was 48%.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The effect of dilutive securities on the weighted average common shares outstanding included in the calculation of earnings per diluted common share for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended (number of shares in millions) 2020 2019 2020 2019 Weighted average common shares outstanding 236.8 237.1 236.6 236.9 Effect of dilutive securities: Stock options 0.5 0.7 0.4 0.6 Other stock compensation plans 0.6 0.7 0.7 0.7 Potentially dilutive common shares 1.1 1.4 1.1 1.3 Adjusted weighted average common shares outstanding 237.9 238.5 237.7 238.2 Dividends per common share $0.54 $0.51 $1.56 $1.47

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Nine Months Ended 2020 2019 Effective tax rate on pretax income 22.0 % 23.5 % The effective tax rate of 22.0% for the nine months ended September 30, 2020 reflects a benefit of $38 million of discrete items associated with PPG's U.S. and foreign jurisdictions. Income tax expense for the first nine months of 2020 is based on an estimated annual effective rate, which requires management to make its best estimate of annual pretax income or loss. Income tax expense for the nine months ended September 30, 2019 reflects $23 million for discrete items associated with PPG's U.S. and foreign locations and implementation of updated regulations associated with the 2017 Tax Cuts and Jobs Act for Global Intangible Low Taxed Income.

Pensions and Other Postretireme

Pensions and Other Postretirement Benefits	9 Months Ended
	Sep. 30, 2020
Retirement Benefits [Abstract]
Pensions and Other Postretirement Benefits	Pensions and Other Postretirement Benefits Service cost for net periodic pension and other postretirement benefit costs is included in Cost of sales, exclusive of depreciation and amortization, Selling, general and administrative, and Research and development, net in the accompanying condensed consolidated statements of income. All other components of net periodic benefit cost are recorded in Other charges in the accompanying condensed consolidated statements of income. The net periodic pension and other postretirement benefit costs for the three and nine months ended September 30, 2020 and 2019 were as follows: Pension Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Service cost $6 $6 $18 $17 Interest cost 22 26 65 79 Expected return on plan assets (36) (35) (108) (105) Amortization of actuarial losses 17 16 53 47 Curtailments — — 1 — Net periodic benefit cost $9 $13 $29 $38 Other Postretirement Benefits Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Service cost $2 $3 $7 $7 Interest cost 5 6 15 19 Amortization of actuarial losses 4 2 12 6 Amortization of prior service credit (14) (14) (44) (43) Net periodic benefit cost ($3) ($3) ($10) ($11) PPG expects its 2020 net periodic pension and other postretirement benefit cost will be approximately $25 million, with pension expense representing approximately $40 million and other postretirement benefit cost representing a benefit of approximately $15 million. Contributions to Defined Benefit Pension Plans Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Non-U.S. defined benefit pension mandatory contributions $2 $2 $7 $8 PPG expects to make mandatory contributions to its non-U.S. pension plans in the range of $5 million to $10 million during the remaining three months of 2020. PPG may make voluntary contributions to its defined benefit pension plans in 2020 and beyond.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2020
Accumulated Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Loss	($ in millions) Unrealized Foreign Currency Translation Adjustments Pension and Other Postretirement Benefit Adjustments, net of tax (c) Unrealized Gain on Derivatives, net of tax Accumulated Other Comprehensive Loss January 1, 2020 ($1,627) ($724) $1 ($2,350) Current year deferrals to AOCI (a) (357) — (357) Current year deferrals to AOCI, net of tax (b) (90) (7) — (97) Reclassifications from AOCI to net income 16 — 16 Period change ($447) $9 $— ($438) September 30, 2020 ($2,074) ($715) $1 ($2,788) January 1, 2019 ($1,734) ($568) $2 ($2,300) Current year deferrals to AOCI (a) (151) — — (151) Current year deferrals to AOCI, net of tax (b) 119 (6) (3) 110 Reclassifications from AOCI to net income — 10 3 13 Period change ($32) $4 $— ($28) September 30, 2019 ($1,766) ($564) $2 ($2,328) (a) Except for income taxes of $7 million and $6 million as of September 30, 2020 and 2019, respectively, related to foreign currency impacts of certain unasserted earnings, unrealized foreign currency translation adjustments related to translation of foreign denominated balance sheets are not presented net of tax given that no deferred U.S. income taxes have been provided on undistributed earnings of non-U.S. subsidiaries because they are deemed to be reinvested for an indefinite period of time. (b) The tax benefit (cost) related to unrealized foreign currency translation adjustments on tax inter-branch transactions and net investment hedges as of September 30, 2020 and 2019 was $27 million and $(39) million, respectively. (c) The tax cost related to the adjustment for pension and other postretirement benefits as of September 30, 2020 and 2019 wa s $5 million and $2 million, respectively. Reclassifications from AOCI are included in the computation of net periodic benefit costs (See Note 11, "Pensions and Other Postretirement Benefits").

Financial Instruments, Hedging

Financial Instruments, Hedging Activities and Fair Value Measurements	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments, Hedging Activities and Fair Value Measurements	Financial Instruments, Hedging Activities and Fair Value Measurements Financial instruments include cash and cash equivalents, short-term investments, cash held in escrow, marketable equity securities, accounts receivable, company-owned life insurance, accounts payable, short-term and long-term debt instruments, and derivatives. The fair values of these financial instruments approximated their carrying values at September 30, 2020 and December 31, 2019, in the aggregate, except for long-term debt instruments. Hedging Activities The Company has exposure to market risk from changes in foreign currency exchange rates and interest rates. As a result, financial instruments, including derivatives, have been used to hedge a portion of these underlying economic exposures. Certain of these instruments qualify as fair value, cash flow, and net investment hedges upon meeting the requisite criteria, including effectiveness of offsetting hedged or underlying exposures. Changes in the fair value of derivatives that do not qualify for hedge accounting are recognized in Income before income taxes in the period incurred. PPG’s policies do not permit speculative use of derivative financial instruments. PPG enters into derivative financial instruments with high credit quality counterparties and diversifies its positions among such counterparties in order to reduce its exposure to credit losses. The Company did not realize a credit loss on derivatives during the three and nine month periods ended September 30, 2020 and 2019. All of PPG's outstanding derivative instruments are subject to accelerated settlement in the event of PPG’s failure to meet its debt or payment obligations under the terms of the instruments’ contractual provisions. In addition, if the Company would be acquired and its payment obligations under its derivative instruments’ contractual arrangements are not assumed by the acquirer, or if PPG would enter into bankruptcy, receivership or reorganization proceedings, its outstanding derivative instruments would also be subject to accelerated settlement. There were no derivative instruments de-designated or discontinued as hedging instruments during the three and nine month periods ended September 30, 2020 and 2019 and there were no gains or losses deferred in Accumulated other comprehensive loss on the condensed consolidated balance sheet that were reclassified to Income before income taxes in the condensed consolidated statement of income in the nine month periods ended September 30, 2020 and 2019 related to hedges of anticipated transactions that were no longer expected to occur. Fair Value Hedges The Company uses interest rate swaps from time to time to manage its exposure to changing interest rates. When outstanding, the interest rate swaps are typically designated as fair value hedges of certain outstanding debt obligations of the Company and are recorded at fair value. PPG has interest rate swaps which converted $525 million of fixed rate debt to variable rate debt. These swaps are designated as fair value hedges and are carried at fair value. Changes in the fair value of these swaps and changes in the fair value of the related debt are recorded in interest expense in the accompanying condensed consolidated statement of income. The fair value of these interest rate swaps was $74 million and $35 million at September 30, 2020 and December 31, 2019, respectively. Cash Flow Hedges PPG designates certain foreign currency forward contracts as cash flow hedges of the Company’s exposure to variability in exchange rates on third party transactions denominated in foreign currencies. There were no outstanding cash flow hedges at September 30, 2020 . The underlying notional amounts relating to foreign currency forward contracts were $43 million at December 31, 2019. As of December 31, 2019, the fair value of all foreign currency forward contracts designated as cash flow hedges was a liability of $1 million. Net Investment Hedges PPG uses cross currency swaps and foreign currency euro-denominated debt to hedge a significant portion of its net investment in its European operations, as follows: As of September 30, 2020 and December 31, 2019, PPG had U.S. dollar to euro cross currency swap contracts with a total notional amount of $875 million and designated these contracts as hedges of the Company's net investment in its European operations. During the term of these contracts, PPG will receive payment in U.S. dollars and make payments in euros to the counterparties. As of September 30, 2020 and December 31, 2019, the fair value of the U.S. dollar to euro cross currency swap contracts was a net asset of $34 million and a net asset of $48 million, respectively. As of September 30, 2020 and December 31, 2019, PPG had designated €2.0 billion of euro-denominated borrowings as hedges of a portion of its net investment in the Company's European operations. The carrying value of these instruments as of September 30, 2020 and December 31, 2019 was $2.3 billion and $2.2 billion, respectively. Other Financial Instruments PPG uses foreign currency forward contracts to manage net transaction exposures that do not qualify for hedge accounting; therefore, the change in the fair value of these instruments is recorded in Other charges in the condensed consolidated statement of income in the period of change. Underlying notional amounts related to these foreign currency forward contracts were $1.1 billion and $2.8 billion at September 30, 2020 and December 31, 2019, respectively. As of September 30, 2020 and December 31, 2019 the fair value of these contracts was a net a net liability of $3 million a nd $6 million, respectively. Gains/Losses Deferred in Accumulated Other Comprehensive Loss As of September 30, 2020, the Company had accumulated pretax unrealized translation gains in Accumulated other comprehensive loss on the condensed consolidated balance sheet related to the euro-denominated borrowings, foreign currency forward contracts and the cross currency swaps of $120 million. As of December 31, 2019, the Company had accumulated pretax unrealized translation gains of $235 million. The following table summarizes the location within the condensed consolidated financial statements and amount of gains/(losses) related to derivative and debt financial instruments for the nine months ended September 30, 2020 and 2019. All dollar amounts are shown on a pretax basis. September 30, 2020 September 30, 2019 Caption In Condensed Consolidated Statement of Income ($ in millions) Gain Deferred in OCI Gain Recognized (Loss)Gain Deferred in OCI Gain Recognized Economic Foreign currency forward contracts $— $27 $— $44 Other charges Fair Value Interest rate swaps — 8 — 2 Interest expense Cash Flow Foreign currency forward contracts — — (4) 4 Other charges and Cost of sales Total Cash Flow $— $35 ($4) $50 Net Investment Cross currency swaps $14 $13 $34 $12 Interest expense Foreign denominated debt 101 — 130 — Total Net Investment $115 $13 $164 $12 Fair Value Measurements The Company follows a fair value measurement hierarchy to measure its assets and liabilities. As of September 30, 2020 and December 31, 2019, the assets and liabilities measured at fair value on a recurring basis were cash equivalents, equity securities and derivatives. In addition, the Company measures its pension plan assets at fair value (see Note 13, "Employee Benefit Plans" under Item 8 in the 2019 Form 10-K for further details). The Company's financial assets and liabilities are measured using inputs from the following three levels: Level 1 inputs are quoted prices in active markets for identical assets and liabilities that the Company has the ability to access at the measurement date. Level 1 inputs are considered to be the most reliable evidence of fair value as they are based on unadjusted quoted market prices from various financial information service providers and securities exchanges. Level 2 inputs are directly or indirectly observable prices that are not quoted on active exchanges, which include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means. The fair values of the derivative instruments reflect the instruments' contractual terms, including the period to maturity, and uses observable market-based inputs, including forward curves. Level 3 inputs are unobservable inputs employed for measuring the fair value of assets or liabilities. The Company does not have any recurring financial assets or liabilities that are recorded in its condensed consolidated balance sheets as of September 30, 2020 and December 31, 2019 that are classified as Level 3 inputs. Assets and liabilities reported at fair value on a recurring basis: September 30, 2020 December 31, 2019 ($ in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Other current assets: Marketable equity securities $5 $— $— $5 $— $— Foreign currency forward contracts (a) — 9 — — 14 — Investments: Marketable equity securities $89 $— $— $80 $— $— Other assets: Cross currency swaps (b) $— $39 $— $— $52 $— Interest rate swaps (c) — 74 — — 35 — Liabilities: Accounts payable and accrued liabilities: Foreign currency forward contracts (a) $— $12 $— $— $20 $— Cross currency swaps (b) — 4 — — — — Foreign currency forward contracts (d) — — — — 1 — Other liabilities: Cross currency swap (b) $— $1 $— $— $4 $— (a) Derivatives not designated as hedging instruments (c) Fair value hedges (b) Net investment hedges (d) Cash flow hedges Long-Term Debt ($ in millions) September 30, 2020 (a) December 31, 2019 (b) Long-term debt - carrying value $4,954 $5,031 Long-term debt - fair value $5,520 $5,363 (a) Excluding finance lease obligations of $9 million and short-term borrowings of $540 million as of September 30, 2020. (b) Excluding finance lease obligations of $11 million and short-term borrowings of $10 million as of December 31, 2019. The fair values of the debt instruments were based on discounted cash flows and interest rates then currently available to the Company for instruments of the same remaining maturities and were measured using level 2 inputs.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company’s stock-based compensation includes stock options, restricted stock units (“RSUs”) and grants of contingent shares that are earned based on achieving targeted levels of total shareholder return. All current grants of stock options, RSUs and contingent shares are made under the PPG Industries, Inc. Amended and Restated Omnibus Incentive Plan (“PPG Amended Omnibus Plan”), which was amended and restated effective April 21, 2016. Shares available for future grants under the PPG Amended Omnibus Plan were 6.2 million as of September 30, 2020. Stock-based compensation and the income tax benefit recognized during the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Stock-based compensation $14 $9 $29 $28 Income tax benefit recognized $3 $2 $7 $6 Grants of stock-based compensation during the nine months ended September 30, 2020 and 2019 were as follows: Nine Months Ended 2020 2019 Grant Details Shares Fair Value Shares Fair Value Stock options 663,485 $21.93 588,870 $22.50 Restricted stock units 203,574 $109.99 233,306 $104.69 Contingent shares (a) 55,319 $119.52 51,850 $109.74 (a) The number of contingent shares represents the target value of the award. Stock options are generally exercisable 36 months after being granted and have a maximum term of 10 years. Compensation expense for stock options is recorded over the vesting period based on the fair value on the date of grant. The fair value of the stock option grants issued during the nine months ended September 30, 2020 was calculated with the following weighted average assumptions: Weighted average exercise price $119.52 Risk free interest rate 1.6 % Expected life of option in years 6.5 Expected dividend yield 1.5 % Expected volatility 20.0 % The risk-free interest rate is determined by using the U.S. Treasury yield curve at the date of the grant and using a maturity equal to the expected life of the option. The expected life of options is calculated using the average of the vesting term and the maximum term, as prescribed by accounting guidance on the use of the simplified method for determining the expected term of an employee share option. The expected dividend yield and volatility are based on historical stock prices and dividend amounts over past time periods equal in length to the expected life of the options. Time-based RSUs generally vest over the three-year period following the date of grant, unless forfeited, and will be paid out in the form of stock, cash or a combination of both at the Company’s discretion at the end of the vesting period. Performance-based RSUs vest based on achieving specific annual performance targets for earnings per share growth and cash flow return on capital over the three calendar year-end periods following the date of grant. Unless forfeited, the performance-based RSUs will be paid out in the form of stock, cash or a combination of both at the Company’s discretion at the end of the three-year performance period if PPG meets the performance targets. For awards granted in 2020, the amount paid upon vesting of performance-based RSUs may range from 0% to 200% of the original grant, based upon the level of earnings per share growth achieved and frequency with which the annual cash flow return on capital performance target is met over the three calendar year periods comprising the vesting period. For awards granted in 2019 and 2018, the amount paid upon vesting of performance-based RSUs may range from 0% to 180% of the original grant. Contingent share grants (referred to as “TSR awards”) are made annually and are paid out at the end of each three-year period following the date of grant based on PPG's performance. Performance is measured by determining the percentile rank of the total shareholder return of PPG common stock in relation to the total shareholder return of the S&P 500 as it existed at the beginning of the three-year performance period excluding any companies that have been removed from the index because they ceased to be publicly traded during the performance period. For awards granted in 2020, the payment of awards following the three-year award period will be based on performance achieved in accordance with the scale set forth in the plan agreement and may range from 0% to 200% of the initial grant. For awards granted in 2019 and 2018, the amount paid following the three-year award period may range from 0% to 220% of the initial grant. Any payments made at the end of the award period may be in the form of stock, cash or a combination of both at the Company's discretion. The TSR awards qualify as liability awards, and compensation expense is recognized over the three-year award period based on the fair value of the awards (giving consideration to the Company’s percentile rank of total shareholder return) remeasured in each reporting period until settlement of the awards.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities matters arising out of the conduct of PPG’s current and past business activities. To the extent that these lawsuits and claims involve personal injury, property damage, and certain other claims, PPG believes it has adequate insurance; however, certain of PPG’s insurers are contesting coverage with respect to some of these claims, and other insurers, as they had prior to the asbestos settlement described below, may contest coverage with respect to some of the asbestos claims. PPG’s lawsuits and claims against others include claims against insurers and other third parties with respect to actual and contingent losses related to environmental, asbestos and other matters. The results of any current or future litigation and claims are inherently unpredictable. However, management believes that, in the aggregate, the outcome of all lawsuits and claims involving PPG will not have a material effect on PPG’s consolidated financial position or liquidity; however, such outcome may be material to the results of operations of any particular period in which costs, if any, are recognized. Shareholder Class Action Asbestos Matters Prior to 2000, the Company had been named as a defendant in numerous claims alleging bodily injury from (i) exposure to asbestos-containing products allegedly manufactured, sold or distributed by the Company, its subsidiaries, or for which they are otherwise alleged to be liable; (ii) exposure to asbestos allegedly present at a facility owned or leased by the Company; or (iii) exposure to asbestos-containing products of Pittsburgh Corning Corporation (“PC”) for which the Company was alleged to be liable under a variety of legal theories (the Company and Corning Incorporated were each 50% shareholders in PC prior to April 27, 2016). Pittsburgh Corning Corporation asbestos bankruptcy In 2000, PC filed for Chapter 11 in the U.S. Bankruptcy Court for the Western District of Pennsylvania in an effort to permanently and comprehensively resolve all of its pending and future asbestos-related liability claims. The Bankruptcy Court subsequently entered a series of orders preliminarily enjoining the prosecution of asbestos litigation against PPG until after the effective date of a confirmed PC plan of reorganization. During the pendency of this preliminary injunction staying asbestos litigation against PPG, PPG and certain of its historical liability insurers negotiated a settlement with representatives of present and future asbestos claimants. That settlement was incorporated into a PC plan of reorganization that was confirmed by the Bankruptcy Court on May 24, 2013 and ultimately became effective on April 27, 2016. With the effectiveness of the plan, the preliminary injunction staying the prosecution of asbestos litigation against PPG expired by its own terms on May 27, 2016. In accordance with the settlement, the Bankruptcy Court issued a permanent channeling injunction under Section 524(g) of the Bankruptcy Code that prohibits present and future claimants from asserting claims against PPG that arise, in whole or in part, out of exposure to asbestos or asbestos-containing products manufactured, sold and/or distributed by PC or asbestos on or emanating from any PC premises. The channeling injunction, by its terms, also prohibits codefendants in cases that are subject to the channeling injunction from asserting claims against PPG for contribution, indemnification or other recovery. The channeling injunction also precludes the prosecution of claims against PPG arising from alleged exposure to asbestos or asbestos-containing products to the extent that a claimant is alleging or seeking to impose liability, directly or indirectly, for the conduct of, claims against, or demands on PC by reason of PPG’s prior: (i) ownership of a financial interest in PC; (ii) involvement in the management of PC, or service as an officer, director or employee of PC or a related party; (iii) provision of insurance to PC or a related party; or (iv) involvement in a financial transaction affecting the financial condition of PC or a related party. The foregoing PC related claims are referred to as “PC Relationship Claims.” The Bankruptcy Court's channeling injunction channels the Company’s liability for PC Relationship Claims to a trust funded in part by PPG and its participating insurers for the benefit of current and future PC asbestos claimants (the “Trust”). The Trust is the sole recourse for holders of PC Relationship Claims. PPG and its affiliates have no further liability or responsibility for, and are permanently protected from, pending and future PC Relationship Claims. The channeling injunction does not extend to present and future claims against PPG that arise out of alleged exposure to asbestos or asbestos-containing products historically manufactured, sold and/or distributed by PPG or its subsidiaries or for which they are alleged to be liable that are not PC Relationship Claims, and does not extend to claims against PPG alleging personal injury allegedly caused by asbestos on premises presently or formerly owned, leased or occupied by PPG. These claims are referred to as "non-PC Relationship Claims". Non-PC relationship claims With respect to the asbestos-related claims pending against the Company at the time PC filed for bankruptcy, the Company considers such claims to fall within one or more of the following categories: (1) claims that have been closed or dismissed as a result of processes undertaken during the bankruptcy; (2) claims that may have been previously filed on the dockets of state and federal courts in various jurisdictions, but are inactive as to the Company; and (3) claims that are subject, in whole or in part, to the channeling injunction and thus will be resolved, in whole or in part, in accordance with the Trust procedures established under the PC bankruptcy reorganization plan. As a result of the foregoing, the Company does not consider these three categories of claims to be open or active litigation against it, although the Company cannot now determine whether, or the extent to which, any of these claims may in the future be reinstituted, reinstated, or revived such that they may become open and active non-PC Relationship Claims against it. Current open and active claims post-Pittsburgh Corning bankruptcy As of September 30, 2020, the Company was aware of approximately 600 open and active asbestos-related claims pending against the Company and certain of its subsidiaries. These claims consist of non-PC Relationship Claims against PPG and claims against a PPG subsidiary the Company acquired on April 1, 2013. The Company is defending these open and active claims vigorously. PPG has established reserves totaling approximately $190 million for asbestos-related claims that would not be channeled to the Trust which, based on presently available information, we believe will be sufficient to encompass all of PPG’s current and estimable potential future asbestos liabilities. These reserves, which are included within Other liabilities on the accompanying condensed consolidated balance sheets, represent PPG’s best estimate of its liability for these claims. These reserves include a $162 million reserve established in 2009 in connection with an amendment to the PC plan of reorganization for non-PC Relationship Claims other than claims arising from premises-related exposures. PPG does not have sufficient current claim information or settlement history on which to base a better estimate of this liability in light of the fact that the Bankruptcy Court’s injunction staying most asbestos claims against the Company was in effect from April 2000 through May 2016. These reserves also include PPG’s best estimate, following an analysis performed in 2019 of its claims history and discussions with consultants and its counsel, of the value of the Company’s potential liability for premises-related non-PC Relationship Claims against it and claims against PPG’s subsidiary acquired on April 1, 2013 that are presently pending, and that are projected to be asserted through December 31, 2028. PPG monitors the activity associated with its asbestos claims and evaluates, on a periodic basis, its estimated liability for such claims, its insurance assets then available, and all underlying assumptions to determine whether any adjustment to the reserves for these claims is required. The amount reserved for asbestos-related claims by its nature is subject to many uncertainties that may change over time, including (i) the ultimate number of claims filed; (ii) the amounts required to resolve both currently known and future unknown claims; (iii) the amount of insurance, if any, available to cover such claims; (iv) the unpredictable aspects of the litigation process, including a changing trial docket and the jurisdictions in which trials are scheduled; (v) the outcome of any trials, including potential judgments or jury verdicts; (vi) the lack of specific information in many cases concerning exposure for which PPG is allegedly responsible, and the claimants’ alleged diseases resulting from such exposure; and (vii) potential changes in applicable federal and/or state tort liability law. All of these factors may have a material effect upon future asbestos-related liability estimates. As a potential offset to any future asbestos financial exposure, under the PC plan of reorganization PPG retained, for its own account, the right to pursue insurance coverage from certain of its historical insurers that did not participate in the PC plan of reorganization. While the ultimate outcome of PPG’s asbestos litigation cannot be predicted with certainty, PPG believes that any financial exposure resulting from its asbestos-related claims will not have a material adverse effect on PPG’s consolidated financial position, liquidity or results of operations. Environmental Matters It is PPG’s policy to accrue expenses for environmental contingencies when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Reserves for environmental contingencies are exclusive of claims against third parties and are generally not discounted. In management’s opinion, the Company operates in an environmentally sound manner and the outcome of the Company’s environmental contingencies will not have a material effect on PPG’s financial position or liquidity; however, any such outcome may be material to the results of operations of any particular period in which costs, if any, are recognized. Management anticipates that the resolution of the Company’s environmental contingencies will occur over an extended period of time. See Note 14, "Commitments and Contingent Liabilities," under Item 8 of the 2019 Form 10-K for additional descriptions of the following environmental matters. As remediation at certain legacy environmental sites progresses, PPG continues to refine its assumptions underlying the estimates of the expected future costs of its remediation programs. PPG’s ongoing evaluation may result in additional charges against income to increase the reserves for these sites. Remediation activities at our legacy sites are not related to the ongoing operations of PPG. In 2020 and 2019, certain charges have been recorded based on updated estimates to increase existing reserves for these sites. Certain other charges related to environmental remediation actions are also expensed as incurred. As of September 30, 2020 and December 31, 2019, PPG had reserves for environmental contingencies associated with PPG’s former chromium manufacturing plant in Jersey City, New Jersey (“New Jersey Chrome”), glass and chemical manufacturing sites, and for other environmental contingencies, including current manufacturing locations and National Priority List sites. These reserves are reported as Accounts payable and accrued liabilities and Other liabilities in the accompanying condensed consolidated balance sheet. Environmental Reserves ($ in millions) September 30, 2020 December 31, 2019 New Jersey Chrome $99 $134 Glass and chemical 99 96 Other 91 74 Total $289 $304 Current portion $81 $62 Pretax charges against income for environmental remediation costs are included in Other charges in the accompanying condensed consolidated statement of income. The pretax charges and cash outlays related to such environmental remediation for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Environmental remediation pretax charges $6 $24 $21 $75 Cash outlays for environmental remediation activities $15 $21 $52 $57 Remediation: New Jersey Chrome In June 2009, PPG entered into a settlement agreement with the New Jersey Department of Environmental Protection (“NJDEP”) and Jersey City, New Jersey (which had asserted claims against PPG for lost tax revenue) which was in the form of a Judicial Consent Order (the "JCO"). Under the JCO, PPG accepted sole responsibility for the remediation activities at its former chromium manufacturing location in Jersey City and 19 additional sites. The principal contaminant of concern is hexavalent chromium. The JCO also provided for the appointment of a court-approved Site Administrator who is responsible for establishing a master schedule for the remediation of the 20 PPG sites which existed at that time. One site was subsequently removed from the JCO process during 2014 and will be remediated separately at a future date. A total of 14 sites remain subject to the JCO process. The most significant assumptions underlying the estimate of remediation costs for all New Jersey Chrome sites are those related to the extent and concentration of chromium impacts in the soil, as these determine the quantity of soil that must be treated in place, the quantity that will have to be excavated and transported for offsite disposal, and the nature of disposal required. PPG regularly evaluates the assessments of costs incurred to date versus current progress and the potential cost impacts of the most recent information, including the extent of impacted soils, percentage of hazardous versus non-hazardous soils, daily soil excavation rates, and engineering, administrative and other associated costs. Based on these assessments, the reserve is adjusted accordingly. Principal factors affecting costs include refinements in the estimate of the mix of hazardous to non-hazardous soils to be excavated, an overall increase in soil volumes to be excavated, enhanced water management requirements, decreased daily soil excavation rates due to site conditions, initial estimates for remedial actions related to groundwater, and oversight and management costs. The reserve adjustments for the estimated costs to remediate all New Jersey Chrome sites are exclusive of any third party indemnification, as the recovery of any such amounts is uncertain. Groundwater remediation at the former Garfield Avenue chromium manufacturing site and five adjacent sites is expected to occur over several years. Ongoing groundwater monitoring will be utilized to develop a final groundwater remedial action work plan which is currently expected to be submitted to NJDEP in the fourth quarter of 2020. PPG’s financial reserve for remediation of all New Jersey Chrome sites was $99 million at September 30, 2020. The major cost components of this liability continue to be related to excavation, transportation and disposal of impacted soil, as well as construction services. These components each account for approximately 20%, 15% and 37% of the accrued amount, respectively. There are multiple, future events yet to occur, including further remedy selection and design, remedy implementation and execution and applicable governmental agency or community organization approvals. Considerable uncertainty exists regarding the timing of these future events for the New Jersey Chrome sites. Further resolution of these events is expected to occur over the next several years. As these events occur and to the extent that the cost estimates of the environmental remediation remedies change, the existing reserve for this environmental remediation matter will continue to be adjusted. Remediation: Glass, Chemicals and Other Sites Among other sites at which PPG is managing environmental liabilities, remedial actions are occurring at a chemical manufacturing site in Barberton, Ohio, where PPG has completed a Facility Investigation and Corrective Measure Study under the United States Environmental Protection Agency's Resource Conservation and Recovery Act Corrective Action Program. PPG has also been addressing the impacts from a legacy plate glass manufacturing site in Kokomo, Indiana under the Voluntary Remediation Program of the Indiana Department of Environmental Management and a site associated with a legacy plate glass manufacturing site near Ford City, Pennsylvania under the Pennsylvania Land Recycling Program under the oversight of the Pennsylvania Department of Environmental Protection. PPG is currently performing additional investigation and remedial activities at these locations. With respect to certain other waste sites, the financial condition of other potentially responsible parties also contributes to the uncertainty of estimating PPG’s final costs. Although contributors of waste to sites involving other potentially responsible parties may face governmental agency assertions of joint and several liability, in general, final allocations of costs are made based on the relative contributions of wastes to such sites. PPG is generally not a major contributor to such sites. Remediation: Reasonably Possible Matters In addition to the amounts currently reserved for environmental remediation, the Company may be subject to loss contingencies related to environmental matters estimated to be as much as $100 million to $200 million. Such unreserved losses are reasonably possible but are not currently considered to be probable of occurrence. These reasonably possible unreserved losses relate to environmental matters at a number of sites, none of which are individually significant. The loss contingencies related to these sites include significant unresolved issues such as the nature and extent of contamination at these sites and the methods that may have to be employed to remediate them. The impact of evolving programs, such as natural resource damage claims, industrial site re-use initiatives and domestic and international remediation programs, also adds to the present uncertainties with regard to the ultimate resolution of this unreserved exposure to future loss. The Company’s assessment of the potential impact of these environmental contingencies is subject to considerable uncertainty due to the complex, ongoing and evolving process of investigation and remediation, if necessary, of such environmental contingencies, and the potential for technological and regulatory developments. Other Matters The Company had outstanding letters of credit and surety bonds of $137 million and guarantees of $9 million as of September 30, 2020. The Company does not believe any loss related to such guarantees is likely.

Revenue Recognition Revenue Rec

Revenue Recognition Revenue Recognition	9 Months Ended
	Sep. 30, 2020
Revenue Disclosure [Abstract]
Revenue Recognition	Revenue Recognition The Company recognizes revenue when control of the promised goods or services is transferred to the customer and in amounts that the Company expects to collect. The timing of revenue recognition takes into consideration the various shipping terms applicable to the Company’s sales. For most transactions, control passes in accordance with agreed upon delivery terms. The Company delivers products to company-owned stores, home centers and other regional or national consumer retail outlets, paint dealers, concessionaires and independent distributors, company-owned distribution networks, and directly to manufacturing companies and retail customers. Each product delivered to a third party customer is considered to satisfy a performance obligation. Performance obligations generally occur at a point in time and are satisfied when control of the goods passes to the customer. The Company is entitled to collection of the sales price under normal credit terms in the regions in which it operates. Accounts receivable are recognized when there is an unconditional right to consideration. Payment terms vary from customer to customer, depending on creditworthiness, prior payment history and other considerations. The Company also provides services by applying coatings to customers' manufactured parts and assembled products and by providing technical support to certain customers. Performance obligations are satisfied over time as critical milestones are met and as services are provided. PPG is entitled to payment as the services are rendered. For the three and nine months ended September 30, 2020 and 2019, service revenue constituted approximately 5% of total revenue. Net sales by segment and region for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Performance Coatings United States and Canada $958 $1,060 $2,825 $3,123 Europe, Middle East and Africa ("EMEA") 789 732 2,140 2,213 Asia Pacific 274 278 728 804 Latin America 230 243 635 711 Total $2,251 $2,313 $6,328 $6,851 Industrial Coatings United States and Canada $526 $605 $1,444 $1,841 EMEA 382 395 1,018 1,283 Asia Pacific 398 366 969 1,066 Latin America 128 147 318 433 Total $1,434 $1,513 $3,749 $4,623 Total Net Sales United States and Canada $1,484 $1,665 $4,269 $4,964 EMEA 1,171 1,127 3,158 3,496 Asia Pacific 672 644 1,697 1,870 Latin America 358 390 953 1,144 Total PPG $3,685 $3,826 $10,077 $11,474

Reportable Segment Information

Reportable Segment Information	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Reportable Segment Information	Reportable Business Segment Information PPG is a multinational manufacturer with 9 operating segments (which the Company refers to as “strategic business units”) that are organized based on the Company’s major products lines. The Company’s reportable business segments include the following two segments: Performance Coatings and Industrial Coatings. The operating segments have been aggregated based on economic similarities, the nature of their products, production processes, end-use markets and methods of distribution. The Performance Coatings reportable business segment is comprised of the automotive refinish coatings, aerospace coatings, architectural coatings – Americas and Asia Pacific, architectural coatings - EMEA, and protective and marine coatings operating segments. This reportable business segment primarily supplies a variety of protective and decorative coatings, sealants and finishes along with paint strippers, stains and related chemicals, as well as transparencies and transparent armor. The Industrial Coatings reportable business segment is comprised of the automotive OEM coatings, industrial coatings, packaging coatings, and the specialty coatings and materials operating segments. This reportable business segment primarily supplies a variety of protective and decorative coatings and finishes along with adhesives, sealants, metal pretreatment products, optical monomers and coatings, precipitated silicas, and other specialty materials. Reportable business segment net sales and segment income for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Net sales: Performance Coatings $2,251 $2,313 $6,328 $6,851 Industrial Coatings 1,434 1,513 3,749 4,623 Total $3,685 $3,826 $10,077 $11,474 Segment income: Performance Coatings $426 $380 $1,060 $1,102 Industrial Coatings 253 206 468 659 Total $679 $586 $1,528 $1,761 Corporate (55) (43) (165) (134) Interest expense, net of interest income (30) (23) (89) (76) Business restructuring-related costs, net (a) (14) (18) (200) (203) Expenses incurred due to a natural disaster (b) (8) — (8) — Debt extinguishment charge — — (7) — Environmental remediation charges — (21) (12) (61) Increase in allowance for doubtful accounts related to COVID-19 — — (30) — Costs associated with accounting investigations — — — (7) Acquisition-related costs (c) — — — (17) Income before income taxes $572 $481 $1,017 $1,263 (a) Included in business restructuring-related costs, net are business restructuring charges, accelerated depreciation of certain assets and other related costs, offset by releases related to previously approved programs. (b) In the third quarter 2020, Hurricane Laura caused damages to a southern U.S. factory that supports the Company's specialty coatings and materials business. (c) Acquisition-related costs include advisory, legal, accounting, valuation, and other professional or consulting fees incurred to effect acquisitions. These costs are included in Selling, general and administrative expense in the condensed consolidated statement of income. Acquisition-related costs also include the impact for the step up to fair value of inventory acquired in certain acquisitions which are included in Cost of Sales, exclusive of depreciation and amortization in the condensed consolidated statement of income.

New Accounting Standards (Polic

New Accounting Standards (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
New Accounting Standards	Accounting Standards Adopted in 2020 Effective January 1, 2020, PPG adopted Accounting Standards Update (“ASU”) No. 2016-13, "Financial Instruments - Credit Losses." This ASU requires an organization to measure all expected credit losses for financial assets, including trade receivables, held at the reporting date based on historical experience, current conditions, and reasonable and supportable information. Organizations will now use forward-looking information to better estimate their credit losses. PPG adopted this ASU using a modified retrospective approach. Under this method of adoption, PPG determined that there was no cumulative-effect adjustment to beginning Retained earnings on the condensed consolidated balance sheet. Adoption of this standard did not impact PPG’s Income before income taxes and had no impact on the condensed consolidated statement of cash flows. See Note 3, “Allowance for Credit Losses” for further details. Effective January 1, 2020, PPG adopted ASU No. 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). PPG adopted this ASU prospectively. Under this method of adoption, PPG determined there was not a material impact to the condensed consolidated balance sheet, Income before income taxes or the condensed consolidated statement of cash flows. Accounting Standards to be Adopted in Future Years In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-06, “Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40).” This ASU simplifies the accounting for convertible debt instruments by removing certain accounting separation models as well as the accounting for debt instruments with embedded conversion features that are not required to be accounted for as derivative instruments. The ASU also updates and improves the consistency of earnings per share calculations for convertible instruments. The amendments in this ASU are effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. PPG is currently assessing the potential impacts this ASU may have on its consolidated financial position, results of operations and cash flows. In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform." This ASU provides optional guidance for a limited period of time to ease potential accounting impacts associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate ("LIBOR"). The amendments in this ASU apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. The amendments in this ASU are effective through December 31, 2022. PPG is currently assessing the potential impacts this ASU may have on its consolidated financial position, results of operations and cash flows.

Credit Losses (Tables)

Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2020
Credit Loss [Abstract]
Accounts Receivable, Allowance for Credit Loss	The following table summarizes the activity for the allowance for credit losses for the nine months ended September 30, 2020: ($ in millions) Trade Receivables Allowance for Credit Losses January 1, 2020 $22 Current-period provision for credit losses 41 Trade receivables written off as uncollectible, net of recoveries (15) Foreign currency impact (1) September 30, 2020 $47

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Inventories	($ in millions) September 30, 2020 December 31, 2019 Finished products $1,009 $1,047 Work in process 188 197 Raw materials 440 431 Supplies 35 35 Total Inventories $1,672 $1,710

Goodwill and Other Identifiab_2

Goodwill and Other Identifiable Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill Attributable to Each Reportable Segment	The change in the carrying amount of goodwill attributable to each reportable segment for the nine months ended September 30, 2020 was as follows: ($ in millions) Performance Industrial Total January 1, 2020 $3,442 $1,028 $4,470 Acquisitions, including purchase accounting adjustments 11 15 26 Foreign currency impact (82) 5 (77) September 30, 2020 $3,371 $1,048 $4,419
Identifiable Intangible Assets with Finite Lives	A summary of the carrying value of the Company's identifiable intangible assets is as follows: September 30, 2020 December 31, 2019 ($ in millions) Gross Accumulated Net Gross Accumulated Net Indefinite-Lived Identifiable Intangible Assets Trademarks $1,064 N/A $1,064 $1,167 N/A $1,167 Definite-Lived Identifiable Intangible Assets Acquired technology $718 ($572) $146 $710 ($549) $161 Customer-related 1,574 (949) 625 1,578 (885) 693 Trade names 208 (120) 88 210 (111) 99 Other 49 (42) 7 51 (40) 11 Total Definite Lived Intangible Assets $2,549 ($1,683) $866 $2,549 ($1,585) $964 Total Identifiable Intangible Assets $3,613 ($1,683) $1,930 $3,716 ($1,585) $2,131
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	As of September 30, 2020, estimated future amortization expense of identifiable intangible assets is as follows: ($ in millions) Future Amortization Expense Remaining three months of 2020 $35 2021 $125 2022 $125 2023 $110 2024 $90 2025 $85 Thereafter $296

Business Restructuring (Tables)

Business Restructuring (Tables)	9 Months Ended
	Sep. 30, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following table summarizes the reserve activity for the nine months ended September 30, 2020 and 2019: Total Reserve ($ in millions) 2020 2019 January 1 $224 $110 Approved restructuring actions (a) 198 194 Release of prior reserves and other adjustments (26) (19) Cash payments (98) (35) Foreign currency impact 10 (8) September 30 $308 $242

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The effect of dilutive securities on the weighted average common shares outstanding included in the calculation of earnings per diluted common share for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended (number of shares in millions) 2020 2019 2020 2019 Weighted average common shares outstanding 236.8 237.1 236.6 236.9 Effect of dilutive securities: Stock options 0.5 0.7 0.4 0.6 Other stock compensation plans 0.6 0.7 0.7 0.7 Potentially dilutive common shares 1.1 1.4 1.1 1.3 Adjusted weighted average common shares outstanding 237.9 238.5 237.7 238.2 Dividends per common share $0.54 $0.51 $1.56 $1.47

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Nine Months Ended 2020 2019 Effective tax rate on pretax income 22.0 % 23.5 %

Pensions and Other Postretire_2

Pensions and Other Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net Periodic Benefit Cost	The net periodic pension and other postretirement benefit costs for the three and nine months ended September 30, 2020 and 2019 were as follows: Pension Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Service cost $6 $6 $18 $17 Interest cost 22 26 65 79 Expected return on plan assets (36) (35) (108) (105) Amortization of actuarial losses 17 16 53 47 Curtailments — — 1 — Net periodic benefit cost $9 $13 $29 $38
Defined Contribution Plan Disclosures	Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Non-U.S. defined benefit pension mandatory contributions $2 $2 $7 $8

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2020
Accumulated Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	($ in millions) Unrealized Foreign Currency Translation Adjustments Pension and Other Postretirement Benefit Adjustments, net of tax (c) Unrealized Gain on Derivatives, net of tax Accumulated Other Comprehensive Loss January 1, 2020 ($1,627) ($724) $1 ($2,350) Current year deferrals to AOCI (a) (357) — (357) Current year deferrals to AOCI, net of tax (b) (90) (7) — (97) Reclassifications from AOCI to net income 16 — 16 Period change ($447) $9 $— ($438) September 30, 2020 ($2,074) ($715) $1 ($2,788) January 1, 2019 ($1,734) ($568) $2 ($2,300) Current year deferrals to AOCI (a) (151) — — (151) Current year deferrals to AOCI, net of tax (b) 119 (6) (3) 110 Reclassifications from AOCI to net income — 10 3 13 Period change ($32) $4 $— ($28) September 30, 2019 ($1,766) ($564) $2 ($2,328) (a) Except for income taxes of $7 million and $6 million as of September 30, 2020 and 2019, respectively, related to foreign currency impacts of certain unasserted earnings, unrealized foreign currency translation adjustments related to translation of foreign denominated balance sheets are not presented net of tax given that no deferred U.S. income taxes have been provided on undistributed earnings of non-U.S. subsidiaries because they are deemed to be reinvested for an indefinite period of time. (b) The tax benefit (cost) related to unrealized foreign currency translation adjustments on tax inter-branch transactions and net investment hedges as of September 30, 2020 and 2019 was $27 million and $(39) million, respectively. (c) The tax cost related to the adjustment for pension and other postretirement benefits as of September 30, 2020 and 2019 wa s $5 million and $2 million, respectively. Reclassifications from AOCI are included in the computation of net periodic benefit costs (See Note 11, "Pensions and Other Postretirement Benefits").

Financial Instruments, Hedgin_2

Financial Instruments, Hedging Activities and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value, Cash Flow and Net Investment Hedges	The following table summarizes the location within the condensed consolidated financial statements and amount of gains/(losses) related to derivative and debt financial instruments for the nine months ended September 30, 2020 and 2019. All dollar amounts are shown on a pretax basis. September 30, 2020 September 30, 2019 Caption In Condensed Consolidated Statement of Income ($ in millions) Gain Deferred in OCI Gain Recognized (Loss)Gain Deferred in OCI Gain Recognized Economic Foreign currency forward contracts $— $27 $— $44 Other charges Fair Value Interest rate swaps — 8 — 2 Interest expense Cash Flow Foreign currency forward contracts — — (4) 4 Other charges and Cost of sales Total Cash Flow $— $35 ($4) $50 Net Investment Cross currency swaps $14 $13 $34 $12 Interest expense Foreign denominated debt 101 — 130 — Total Net Investment $115 $13 $164 $12
Assets and Liabilities Reported at Fair Value on a Recurring Basis	Assets and liabilities reported at fair value on a recurring basis: September 30, 2020 December 31, 2019 ($ in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Other current assets: Marketable equity securities $5 $— $— $5 $— $— Foreign currency forward contracts (a) — 9 — — 14 — Investments: Marketable equity securities $89 $— $— $80 $— $— Other assets: Cross currency swaps (b) $— $39 $— $— $52 $— Interest rate swaps (c) — 74 — — 35 — Liabilities: Accounts payable and accrued liabilities: Foreign currency forward contracts (a) $— $12 $— $— $20 $— Cross currency swaps (b) — 4 — — — — Foreign currency forward contracts (d) — — — — 1 — Other liabilities: Cross currency swap (b) $— $1 $— $— $4 $— (a) Derivatives not designated as hedging instruments (c) Fair value hedges (b) Net investment hedges (d) Cash flow hedges
Schedule of Long-term Debt Instruments	($ in millions) September 30, 2020 (a) December 31, 2019 (b) Long-term debt - carrying value $4,954 $5,031 Long-term debt - fair value $5,520 $5,363 (a) Excluding finance lease obligations of $9 million and short-term borrowings of $540 million as of September 30, 2020.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-based Compensation, Activity [Table Text Block]	Stock-based compensation and the income tax benefit recognized during the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Stock-based compensation $14 $9 $29 $28 Income tax benefit recognized $3 $2 $7 $6
Details of Grants of Stock-based Compensation	Grants of stock-based compensation during the nine months ended September 30, 2020 and 2019 were as follows: Nine Months Ended 2020 2019 Grant Details Shares Fair Value Shares Fair Value Stock options 663,485 $21.93 588,870 $22.50 Restricted stock units 203,574 $109.99 233,306 $104.69 Contingent shares (a) 55,319 $119.52 51,850 $109.74 (a) The number of contingent shares represents the target value of the award.
Weighted Average Assumptions Used in Calculating the Fair Value of Stock Option	The fair value of the stock option grants issued during the nine months ended September 30, 2020 was calculated with the following weighted average assumptions: Weighted average exercise price $119.52 Risk free interest rate 1.6 % Expected life of option in years 6.5 Expected dividend yield 1.5 % Expected volatility 20.0 %

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Environmental Liabilities [Table Text Block]	Environmental Reserves ($ in millions) September 30, 2020 December 31, 2019 New Jersey Chrome $99 $134 Glass and chemical 99 96 Other 91 74 Total $289 $304 Current portion $81 $62
Environmental Costs [Table Text Block]	Pretax charges against income for environmental remediation costs are included in Other charges in the accompanying condensed consolidated statement of income. The pretax charges and cash outlays related to such environmental remediation for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Environmental remediation pretax charges $6 $24 $21 $75 Cash outlays for environmental remediation activities $15 $21 $52 $57

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue Disclosure [Abstract]
Revenue from External Customers by Geographic Areas	Net sales by segment and region for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Performance Coatings United States and Canada $958 $1,060 $2,825 $3,123 Europe, Middle East and Africa ("EMEA") 789 732 2,140 2,213 Asia Pacific 274 278 728 804 Latin America 230 243 635 711 Total $2,251 $2,313 $6,328 $6,851 Industrial Coatings United States and Canada $526 $605 $1,444 $1,841 EMEA 382 395 1,018 1,283 Asia Pacific 398 366 969 1,066 Latin America 128 147 318 433 Total $1,434 $1,513 $3,749 $4,623 Total Net Sales United States and Canada $1,484 $1,665 $4,269 $4,964 EMEA 1,171 1,127 3,158 3,496 Asia Pacific 672 644 1,697 1,870 Latin America 358 390 953 1,144 Total PPG $3,685 $3,826 $10,077 $11,474

Reportable Segment Information

Reportable Segment Information (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Reconciliation Of Revenue And Operating Income From Segments To Consolidated [Text Block]	Reportable business segment net sales and segment income for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended ($ in millions) 2020 2019 2020 2019 Net sales: Performance Coatings $2,251 $2,313 $6,328 $6,851 Industrial Coatings 1,434 1,513 3,749 4,623 Total $3,685 $3,826 $10,077 $11,474 Segment income: Performance Coatings $426 $380 $1,060 $1,102 Industrial Coatings 253 206 468 659 Total $679 $586 $1,528 $1,761 Corporate (55) (43) (165) (134) Interest expense, net of interest income (30) (23) (89) (76) Business restructuring-related costs, net (a) (14) (18) (200) (203) Expenses incurred due to a natural disaster (b) (8) — (8) — Debt extinguishment charge — — (7) — Environmental remediation charges — (21) (12) (61) Increase in allowance for doubtful accounts related to COVID-19 — — (30) — Costs associated with accounting investigations — — — (7) Acquisition-related costs (c) — — — (17) Income before income taxes $572 $481 $1,017 $1,263 (a) Included in business restructuring-related costs, net are business restructuring charges, accelerated depreciation of certain assets and other related costs, offset by releases related to previously approved programs. (b) In the third quarter 2020, Hurricane Laura caused damages to a southern U.S. factory that supports the Company's specialty coatings and materials business. (c) Acquisition-related costs include advisory, legal, accounting, valuation, and other professional or consulting fees incurred to effect acquisitions. These costs are included in Selling, general and administrative expense in the condensed consolidated statement of income. Acquisition-related costs also include the impact for the step up to fair value of inventory acquired in certain acquisitions which are included in Cost of Sales, exclusive of depreciation and amortization in the condensed consolidated statement of income.

Credit Losses (Details)

Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
January 1, 2020		$ 22		$ 22
Current-period provision for credit losses				41
Accounts Receivable, Allowance for Credit Loss, Writeoff				15
Foreign currency impact				(1)
September 30, 2020	$ 47			47
Increase in allowance for doubtful accounts related to COVID-19	0	$ 30	$ 0	30	$ 0
Reserve for future COVID-19-related matters	$ 25			$ 25

Inventories (Schedule of Invent

Inventories (Schedule of Inventory) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Finished products	$ 1,009	$ 1,047
Work in process	188	197
Raw materials	440	431
Supplies	35	35
Total	$ 1,672	$ 1,710

Inventories (Additional Informa

Inventories (Additional Information) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Line Items]
First-in, first-out method of inventory valuation, amount of increase in inventory value	$ 111	$ 124
UNITED STATES
Inventory Disclosure [Line Items]
U.S. inventories as a percentage of total inventories	34.00%	34.00%

Goodwill and Other Identifiab_3

Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 4,470
Acquisitions	(26)
Currency	(77)
Ending Balance	4,419
Performance Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	3,442
Acquisitions	(11)
Currency	(82)
Ending Balance	3,371
Industrial Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	1,028
Acquisitions	(15)
Currency	5
Ending Balance	$ 1,048

Goodwill and Other Identifiab_4

Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets with Finite Lives) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Trademarks	$ 1,064	$ 1,167
Gross Carrying Amount	2,549	2,549
Accumulated Amortization	(1,683)	(1,585)
Net	866	964
Intangible assets, gross (excluding goodwill)	3,613	3,716
Total Identifiable Intangible Assets	1,930	2,131
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	35
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	125
Finite-Lived Intangible Assets, Amortization Expense, Year Two	125
Finite-Lived Intangible Assets, Amortization Expense, Year Three	110
Finite-Lived Intangible Assets, Amortization Expense, Year Four	90
Finite-Lived Intangible Assets, Amortization Expense, Year Five	85
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	296
Acquired technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	718	710
Accumulated Amortization	(572)	(549)
Net	146	161
Customer-related intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,574	1,578
Accumulated Amortization	(949)	(885)
Net	625	693
Tradenames [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	208	210
Accumulated Amortization	(120)	(111)
Net	88	99
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49	51
Accumulated Amortization	(42)	(40)
Net	$ 7	$ 11

Business Restructuring (Schedul

Business Restructuring (Schedule of Restructuring Activity) (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 308			$ 242	$ 308	$ 242	$ 224	$ 110
Business restructuring, net	$ 0			$ 2	172	175
Restructuring Reserve, Accrual Adjustment					26	19
Payments for Restructuring					98	35
Restructuring Reserve, Translation Adjustment					10	(8)
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pretax		$ 176
Business restructuring, net			$ 22		$ 198	$ 194

Borrowings (Details)

Borrowings (Details)	1 Months Ended						3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)	Aug. 31, 2020USD ($)	Jun. 30, 2020USD ($)	May 30, 2020USD ($)	Apr. 30, 2020USD ($)	Aug. 31, 2019USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)	Feb. 27, 2018USD ($)
Debt Instrument [Line Items]
Stated interest percentage		3.75%		2.55%								3.75%
Redemption charge							$ 0	$ 0	$ 7,000,000	$ 0
Aggregate principal amount		$ 100,000,000		$ 300,000,000								$ 700,000,000
Redemption price, percentage		101.00%		101.00%
Proceeds from issuance of notes		$ 119,000,000		$ 296,000,000
Repayment of Term Loan	$ 1,000,000,000								1,000,000,000	0
Proceeds from revolving credit facility									$ 800,000,000	$ 0
Debt covenant, total indebtedness to total capitalization ratio, maximum						0.60
Debt covenant, acquisition for consideration, minimum threshold						$ 1,000,000,000
Debt covenant, total indebtedness to total capitalization ratio, maximum when acquisition for consideration threshold is met, percentage						0.65
Debt instrument, total indebtedness to total capitalization, percentage									0.48
Long-term commercial paper	$ 0						0		$ 0		$ 100,000,000
Revolving Credit Facility | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument term						5 years
Revolving credit facility outstanding						$ 2,200,000,000
Line of credit facility, additional borrowing capacity available to lender conditions						$ 750,000,000
Proceeds from revolving credit facility							$ 800,000,000
Notes Payable, Other Payables
Debt Instrument [Line Items]
Early redemption of notes			$ 500,000,000
Stated interest percentage	3.60%						3.60%		3.60%
Redemption charge			7,000,000
Redemption charge, make-whole cash premium			6,000,000
Unamortized fees and discounts related to the debt redeemed			$ 1,000,000
Short-term Debt
Debt Instrument [Line Items]
Aggregate principal amount					$ 1,500,000,000
Debt instrument term					364 days

Earnings Per Common Share (Calc

Earnings Per Common Share (Calculations) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share, Diluted [Abstract]
Weighted average common shares outstanding	236,800,000	237,100,000	236,600,000	236,900,000
Effect of dilutive securities:
Stock options	500,000	700,000	400,000	600,000
Other stock compensation plans	600,000	700,000	700,000	700,000
Potentially dilutive common shares	1,100,000	1,400,000	1,100,000	1,300,000
Adjusted weighted average common shares outstanding	237,900,000	238,500,000	237,700,000	238,200,000
Dividends per common share (in dollars per share)	$ 0.54	$ 0.51	$ 1.56	$ 1.47
Outstanding stock options excluded from the computation of diluted earnings per share due to their antidilutive effect	1,500,000	1,000,000	2,000,000	1,000,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate	22.00%	23.50%
Other Tax Expense (Benefit)	$ 38	$ 23

Pensions and Other Postretire_3

Pensions and Other Postretirement Benefits (Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ 0	$ 0	$ 1	$ 0
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	3	7	7
Interest cost	5	6	15	19
Amortization of actuarial losses	4	2	12	6
Amortization of prior service credit	14	14	44	43
Net periodic benefit cost	(3)	(3)	(10)	(11)
Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	6	18	17
Interest cost	22	26	65	79
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	36	35	108	105
Amortization of actuarial losses	17	16	53	47
Net periodic benefit cost	$ 9	$ 13	$ 29	$ 38

Pensions and Other Postretire_4

Pensions and Other Postretirement Benefits (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2020
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost	$ 9	$ 13	$ 29	$ 38
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost	(3)	(3)	(10)	(11)
Foreign Plan | Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected employer mandatory contributions	5		5
Foreign Plan | Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected employer mandatory contributions	10		10
Mandatory Contribution | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions to defined benefit pension plans	$ 2	$ 2	$ 7	$ 8
Scenario, Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost					$ 25
Scenario, Forecast | Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost					40
Scenario, Forecast | Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit cost					$ 15

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ (2,788)	$ (2,328)	$ (2,350)	$ (2,300)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(357)	(151)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(97)	110
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	16	13
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(438)	(28)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	7	6
Tax cost related to unrealized currency translation adjustments other than translation of foreign denominated balance sheets	27	(39)
Pension and other postretirement benefit adjustments, tax cost	5	2
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(2,074)	(1,766)	(1,627)	(1,734)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(357)	(151)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(90)	119
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(447)	(32)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(715)	(564)	(724)	(568)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax		0
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(7)	(6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	16	10
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	9	4
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	1	2	$ 1	$ 2
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0	0
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0	(3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	3
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 0	$ 0

Financial Instruments, Hedgin_3

Financial Instruments, Hedging Activities and Fair Value Measurements (Additional Information) (Details) $ in Millions, € in Billions	6 Months Ended	9 Months Ended
	Jun. 30, 2020EUR (€)	Sep. 30, 2020EUR (€)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Foreign Currency Contracts, Liability, Fair Value Disclosure						$ 1
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value, Net			$ 34			48
Fair Value of Debt Instrument Designated as a Hedge of Net Investment in Foreign Operations			2,300			2,200
Accumulated pretax unrealized translation gains (losses) in AOCI, related to both the euro-denominated borrowings and the cross currency swaps that have been designated as hedges of net investments			5,424	$ 4,938	$ 4,837	5,403	$ 5,355	$ 5,187	$ 5,010	$ 4,732
Long-term Debt			4,954			5,031
Long-lived assets fair value amount			5,520			5,363
Finance Lease, Liability			9
Short-term debt			540			10
Capital Lease Obligations						11
Interest rate swaps
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount			525
Interest Rate Derivatives, at Fair Value, Net						35	$ 74
Cross currency swaps
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount			875			875
Foreign currency forward contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount			1,100			2,800
Foreign Currency Contracts, Liability, Fair Value Disclosure			3			6
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 1
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			0			0
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 1 | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			0			0
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 2
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			0			1
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 2 | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			12			20
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 3
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			0			0
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 3 | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative liabilities			0			0
Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount						43
Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Long-term Debt | €	€ 2	€ 2
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Accumulated pretax unrealized translation gains (losses) in AOCI, related to both the euro-denominated borrowings and the cross currency swaps that have been designated as hedges of net investments			$ 120			$ 235

Financial Instruments, Hedgin_4

Financial Instruments, Hedging Activities and Fair Value Measurements (Cash Flow and Net Investment Hedges) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value Hedging | Interest rate swaps | Interest expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 8	$ 2
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	0	(4)
Gain (Loss) Recognized Amount	35	50
Cash Flow Hedging | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	0	(4)
Gain (Loss) Recognized Amount	0	4
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	115	164
Gain (Loss) Recognized Amount	13	12
Net Investment Hedging | Cross currency swaps
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	14	34
Gain (Loss) Recognized Amount	13	12
Net Investment Hedging | Foreign denominated debt
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	101	130
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 27	$ 44

Financial Instruments, Hedgin_5

Financial Instruments, Hedging Activities and Fair Value Measurements (Assets and liabilities reported at fair value on a recurring basis) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Marketable equity securities | Other current assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 5	$ 5
Marketable equity securities | Other current assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Marketable equity securities | Other current assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Marketable equity securities | Investments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	89	80
Marketable equity securities | Investments | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Marketable equity securities | Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	1
Foreign currency forward contracts | Accounts payable and accrued liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Foreign currency forward contracts | Other liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Foreign currency forward contracts | Other liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	1	4
Foreign currency forward contracts | Other liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Foreign currency forward contracts | Not Designated as Hedging Instrument | Other current assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Foreign currency forward contracts | Not Designated as Hedging Instrument | Other current assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	9	14
Foreign currency forward contracts | Not Designated as Hedging Instrument | Other current assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Foreign currency forward contracts | Not Designated as Hedging Instrument | Accounts payable and accrued liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Foreign currency forward contracts | Not Designated as Hedging Instrument | Accounts payable and accrued liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	12	20
Foreign currency forward contracts | Not Designated as Hedging Instrument | Accounts payable and accrued liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Cross currency swaps | Other assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Cross currency swaps | Other assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	39	52
Cross currency swaps | Other assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Cross currency swaps | Accounts payable and accrued liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Cross currency swaps | Accounts payable and accrued liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	4	0
Cross currency swaps | Accounts payable and accrued liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Interest rate swaps | Other assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Interest rate swaps | Other assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	74	35
Interest rate swaps | Other assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 0	$ 0

Stock-Based Compensation (Addit

Stock-Based Compensation (Additional Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants under the PPG Omnibus Plan	6,200,000		6,200,000
Stock-based compensation expense	$ 14	$ 9	$ 29	$ 28
Total income tax benefit recognized related to the stock-based compensation	$ 3	$ 2	$ 7	$ 6
Stock options granted from the PPG Omnibus Plan			663,485	588,870
Stock options granted from the PPG Omnibus Plan, weighted average fair value per share (in usd per share)			$ 21.93	$ 22.50
Maximum term of the outstanding stock options for the PPG Omnibus Plan and the PPG Stock Plan for certain employees			10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted			203,574	233,306
RSUs granted, weighted average fair value per share (in usd per share)			$ 109.99	$ 104.69
Award vesting period (in years)			3 years
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted			55,319	51,850
RSUs granted, weighted average fair value per share (in usd per share)			$ 119.52	$ 109.74
Executive Officer Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period for recognizing compensation costs (in years)			3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable period			36 months

Stock-Based Compensation (Weigh

Stock-Based Compensation (Weighted Average Assumptions Used in Calculating Fair Value of Stock Option) (Details)	9 Months Ended
	Sep. 30, 2020$ / shares
Share-based Payment Arrangement [Abstract]
Weighted average exercise price (in usd per share)	$ 119.52
Risk free interest rate	1.60%
Expected life of option in years	6 years 6 months
Expected dividend yield	1.50%
Expected volatility	20.00%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities Asbestos Information (Details) $ in Millions	Sep. 30, 2020USD ($)
Other Reserves	$ 190
Asbestos Issue [Member]
Loss Contingency, Pending Claims, Number	600
Other Reserves	$ 162

Commitments and Contingent Li_4

Commitments and Contingent Liabilities (Additional Information) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)Location	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)Location	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)	Jun. 30, 2010Location	Jun. 30, 2009Location
Commitments and Contingencies Disclosure [Line Items]
Litigation Settlement, Amount Awarded to Other Party			$ 25
Reserves for environmental contingencies	$ 289		289		$ 304
Reserves for environmental contingencies classified as current liabilities	81		81		62
Environmental remediation charge	6	$ 24	21	$ 75
Payments for Environmental Liabilities	15	21	52	57
Environmental remediation charges	0	$ 21	12	$ 61
Outstanding letters of credit	137		137
Guarantees	9		9
Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Unreserved loss contingencies related to environmental matters			100
Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Unreserved loss contingencies related to environmental matters			200
Jersey City Manufacturing Plant [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	99		99		134
Legacy Glass and Chemical Sites [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	99		99		96
Other Environmental Contingencies [Member]
Commitments and Contingencies Disclosure [Line Items]
Reserves for environmental contingencies	$ 91		$ 91		$ 74
Judicial Consent Order [Member]
Commitments and Contingencies Disclosure [Line Items]
Total number of sites to be remediated | Location	14		14			20	19
Excavation of Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	20.00%		20.00%
Soil Treatment, Transportation And Disposal Of Excavated Soil [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	15.00%		15.00%
Construction Services (Related To Soil Excavation, Groundwater Management And Site Security) [Member]
Commitments and Contingencies Disclosure [Line Items]
Percentage of the total remaining reserve	37.00%		37.00%

Revenue Recognition - Schedule

Revenue Recognition - Schedule Of Revenue By Revenue Source (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 3,685	$ 3,826	$ 10,077	$ 11,474
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	1,484	1,665	4,269	4,964
Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	1,171	1,127	3,158	3,496
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	672	644	1,697	1,870
Latin America
Disaggregation of Revenue [Line Items]
Net sales	358	390	953	1,144
Performance Coatings Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	2,251	2,313	6,328	6,851
Performance Coatings Segment [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	958	1,060	2,825	3,123
Performance Coatings Segment [Member] | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	789	732	2,140	2,213
Performance Coatings Segment [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	274	278	728	804
Performance Coatings Segment [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	230	243	635	711
Industrial Coatings Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,434	1,513	3,749	4,623
Industrial Coatings Segment [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	526	605	1,444	1,841
Industrial Coatings Segment [Member] | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	382	395	1,018	1,283
Industrial Coatings Segment [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	398	366	969	1,066
Industrial Coatings Segment [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 128	$ 147	$ 318	$ 433
Revenue from Contract with Customer | Service
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue			5.00%

Reportable Segment Informatio_2

Reportable Segment Information (Additional Information) (Details)	9 Months Ended
	Sep. 30, 2020Segment
Segment Reporting [Abstract]
Number of Operating Segments	9
Number of Reportable Segments	2

Reportable Segment Informatio_3

Reportable Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 3,685		$ 3,826	$ 10,077	$ 11,474
Segment income (loss)	679		586	1,528	1,761
Corporate	(55)		(43)	(165)	(134)
Interest expense, net of interest income	(30)		(23)	(89)	(76)
Business restructuring-related costs, net	14		18	200	203
Expenses incurred due to a natural disaster	(8)		0	(8)	0
Debt extinguishment charge	0		0	(7)	0
Environmental remediation charges	0		(21)	(12)	(61)
Increase in allowance for doubtful accounts related to COVID-19	0	$ 30	0	30	0
Costs associated with accounting investigations	0		0	0	(7)
Acquisition-related costs	0		0	0	(17)
Income before income taxes	572		481	1,017	1,263
Performance Coatings [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,251		2,313	6,328	6,851
Segment income (loss)	426		380	1,060	1,102
Industrial Coatings [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,434		1,513	3,749	4,623
Segment income (loss)	$ 253		$ 206	$ 468	$ 659