v3.26.1
Related-Party Transactions (Details) - EBP 385 - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
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