v3.26.1
Cover
 6 Months Ended
Jun. 30, 2026
shares
Entity Information [Line Items]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2026
Document Transition Report false
Entity File Number 001-35651
Entity Registrant Name THE BANK OF NEW YORK MELLON CORPORATION
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 13-2614959
Entity Address, Address Line One 240 Greenwich Street
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10286
City Area Code 212
Local Phone Number 495-1784
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding (shares) 678,504,142
Amendment Flag false
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q2
Entity Central Index Key 0001390777
Current Fiscal Year End Date --12-31
Common Stock, $0.01 par value  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol BNY
Security Exchange Name NYSE
6.244% Fixed-to-Floating Rate Normal Preferred Capital Securities of Mellon Capital IV  
Entity Information [Line Items]  
Title of 12(b) Security 6.244% Fixed-to-Floating Rate Normal Preferred Capital Securities of Mellon Capital IV
Trading Symbol BNY/P
Security Exchange Name NYSE
Depositary Shares  
Entity Information [Line Items]  
Title of 12(b) Security Depositary Shares, each representing a 1/4,000th interest in a share of Series K Noncumulative
Trading Symbol BNY PRK
Security Exchange Name NYSE