Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating activities
Income from continuing operations	$ 1,587	$ 1,377	$ 1,262
Adjustments to reconcile net income to cash from operations:
Depreciation and amortization	528	492	514
Pension settlement charge	0	0	190
Impairment and other-related charges, net	24	146	160
Stock-based compensation expense	46	42	56
Deferred income taxes	(27)	(97)	(187)
Business restructuring, net	6	233	(2)
Cash contributions to pension plans	(29)	(26)	(46)
Cash used for restructuring actions	(82)	(52)	(56)
Change in certain asset and liability accounts (net of acquisitions):
Receivables	(190)	(181)	12
Inventories	(35)	(27)	145
Other current assets	(1)	(30)	(41)
Accounts payable and accrued liabilities	67	(259)	151
Noncurrent assets and liabilities, net	(40)	(73)	(50)
Taxes and interest payable	(105)	(31)	71
Other	187	(123)	115
Cash from operating activities - continuing operations	1,936	1,391	2,294
Cash from operating activities - discontinued operations	5	29	117
Cash from operating activities	1,941	1,420	2,411
Investing activities
Capital expenditures	(778)	(721)	(516)
Business acquisitions, net of cash balances acquired	(1)	(31)	(109)
Proceeds from divestiture of businesses	43	325	36
Other	36	28	64
Cash used for investing activities - continuing operations	(700)	(399)	(525)
Cash from/(used for) investing activities - discontinued operations	0	506	(31)
Cash (used for)/from investing activities	(700)	107	(556)
Financing activities
Proceeds from Term Loan, net of fees	309	274	550
Repayment of Term Loan Credit Agreement	0	0	(1,100)
Proceeds from the issuance of debt, net of discounts and fees	1,633	0	0
Repayment of long-term debt	(1,039)	(300)	(300)
Purchase of treasury stock	(790)	(752)	(86)
Dividends paid on PPG common stock	(628)	(622)	(598)
Other	(30)	(25)	(16)
Cash used for financing activities - continuing operations	(545)	(1,425)	(1,550)
Cash used for financing activities - discontinued operations	0	0	0
Cash used for financing activities	(545)	(1,425)	(1,550)
Effect of currency exchange rate changes on cash and cash equivalents	197	(325)	110
Cash reclassified to assets held for sale	0	0	(5)
Net increase/(decrease) in cash and cash equivalents	893	(223)	410
Cash and cash equivalents, beginning of year	1,270	1,493	1,083
Cash and cash equivalents, end of year	2,163	1,270	1,493
Supplemental disclosures of cash flow information:
Interest paid, net of amount capitalized	210	247	213
Taxes paid, net of refunds	438	653	488
Capital expenditures accrued within Accounts payable and accrued liabilities at year-end	147	160	170
Purchases of treasury stock transacted but not yet settled	$ 4	$ 12	$ 14