Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating activities:
Net income attributable to the controlling and noncontrolling interests	$ 1,420	$ 1,206
Adjustments to reconcile net income to cash from operations:
Depreciation and amortization	404	408
Pension settlement charge	0	190
Stock-based compensation expense	32	42
Deferred income taxes	(68)	(131)
Cash used for restructuring actions	(37)	(44)
Change in certain asset and liability accounts (net of acquisitions):
Receivables	(436)	(358)
Inventories	(163)	70
Other current assets	(36)	(70)
Accounts payable and accrued liabilities	(26)	72
Taxes and interest payable	2	92
Noncurrent assets and liabilities, net	20	(133)
Other	(38)	169
Cash from operating activities	1,074	1,513
Investing activities:
Capital expenditures	(523)	(381)
Business acquisitions, net of cash balances acquired	(29)	(108)
Proceeds from asset sales	0	25
Payments for the settlement of cross currency swap contracts	(107)	(13)
Proceeds from the settlement of cross currency swap contracts	118	60
Other	30	18
Cash used for investing activities	(511)	(399)
Financing activities:
Net proceeds from commercial paper and short-term debt	408	0
Net change in borrowing with maturities of three months or less	(1)	(16)
Proceeds from Term Loan, net of fees	274	550
Repayment of Term Loan Credit Agreement	0	(800)
Repayment of long-term debt	300	300
Purchase of treasury stock	(511)
Dividends paid on PPG common stock	(464)	(445)
Other	(23)	6
Cash used for financing activities	(617)	(1,005)
Effect of currency exchange rate changes on cash and cash equivalents	(209)	10
Net (decrease)/increase in cash and cash equivalents	(263)	119
Cash and cash equivalents, beginning of period	1,514	1,099
Cash and cash equivalents, end of period	1,251	1,218
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Interest paid, net of amount capitalized	198	181
Taxes paid, net of refunds	481	378
Capital expenditures accrued within Accounts payable and accrued liabilities at period-end	$ 89	$ 75