v3.26.1
Reconciliation of The Bank of New York Mellon Corporation 401(k) Savings Plan Financial Statements to Form 5500 - Reconciliation of Net Assets Available for Benefit (Details) - EBP 004 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]      
Net assets available for plan benefits $ 11,022,497,843 $ 9,931,854,572 $ 8,981,468,677
Benefit claims payable (3,680,152) (3,178,527)  
Adjustment from contract value to fair value for fully benefit-responsive investment contracts (12,142,244) (22,689,548)  
Net assets available for plan benefits per the Master Trust’s Form 5500 $ 11,006,675,447 $ 9,905,986,497