v3.26.1
Form 5500, Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) (Details) - EBP 385
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]  
Loans to participants $ 20
Total $ 8,071
Minimum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Participant loan, interest rate 4.25%
Maximum  
EBP, Schedule of Asset Held for Investment [Line Items]  
Participant loan, interest rate 9.50%
Investment, Identifier [Axis]: Cash Equivalent | BPPR Bank Deposit Sweep Program  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value $ 13
Investment, Identifier [Axis]: Cash Equivalent | BPPR Time Deposit Open Account  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 1
Investment, Identifier [Axis]: Cash Equivalent | Vanguard Treasury Money Market  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 676
Investment, Identifier [Axis]: Common Stock | Investment in PPG Industries, Inc. common stock — at fair value  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 974
Investment, Identifier [Axis]: Mutual Fund | Blackrock Life Index Retirement  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 294
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2030 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 638
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2035 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 979
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2040 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 1,089
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2045 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 193
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2050 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 141
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2055 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 41
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2060 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 20
Investment, Identifier [Axis]: Mutual Fund | Blackrock Lifepath Index 2065 Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 2
Investment, Identifier [Axis]: Mutual Fund | Fidelity Contrafund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 372
Investment, Identifier [Axis]: Mutual Fund | Fidelity Growth Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 419
Investment, Identifier [Axis]: Mutual Fund | Vanguard 500 Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 1,514
Investment, Identifier [Axis]: Mutual Fund | Vanguard FTSE All World ex-US Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 249
Investment, Identifier [Axis]: Mutual Fund | Vanguard Small-Cap Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value 258
Investment, Identifier [Axis]: Mutual Fund | Vanguard Total Bond Market Index Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
Current Value $ 178