Related-Party Transactions (Details) - EBP 384 - PPG Industries, Inc. common stock - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| EBP, Related Party and Party-in-Interest Transactions [Line Items] | ||
| Investment (in shares) | 3,253,922 | 3,924,604 |
| Investment acquired, cost | $ 87 | |
| Investment sold, selling price | 175 | |
| Dividend income on investment | $ 9 |
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- Definition Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Cost of investment, excluding plan interest in master trust, acquired by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares or units of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of selling price for investment, excluding plan interest in master trust, sold by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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