Related-Party Transactions (Details) - EBP 385 - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| EBP, Related Party and Party-in-Interest Transactions [Line Items] | ||
| Interest and dividend income | $ 245,000 | |
| PPG Industries, Inc. common stock | ||
| EBP, Related Party and Party-in-Interest Transactions [Line Items] | ||
| Investment, number of shares (in shares) | 9,506 | 14,332 |
| Investment acquired, excluding plan interest in master trust, cost | $ 84,409 | |
| Investment sold, excluding plan interest in master trust, selling price | $ 148,374 | |
| Interest and dividend income | $ 28,171 | |
| X | ||||||||||
- Definition Amount of increase in net asset available for benefit from interest and 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/disclosureRef
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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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