v3.26.1
Acquisition Activity (Narrative) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 05, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 22, 2026
employee
branch
customer
Dec. 31, 2025
USD ($)
Disposal Group, Including Discontinued Operations [Line Items]          
Number of customers converted to PNC | customer       780,000  
Number of employees converted to PNC | employee       1,620  
Number of branches converted to PNC | branch       95  
Acquisition costs   $ 127 $ 225    
Integration related, expense   121 218    
Integration related cost   6 7    
Goodwill   $ 13,317 $ 13,317   $ 10,959
Core Deposits          
Disposal Group, Including Discontinued Operations [Line Items]          
Core deposit intangible amortized life     10 years    
FirstBank Holding Company          
Disposal Group, Including Discontinued Operations [Line Items]          
Business combination, consideration transferred $ 4,300        
Goodwill 2,358        
FirstBank Holding Company | Series A Preferred Stock          
Disposal Group, Including Discontinued Operations [Line Items]          
Business combination, consideration transferred 4,200        
FirstBank Holding Company | Series B          
Disposal Group, Including Discontinued Operations [Line Items]          
Business combination, consideration transferred $ 100