v3.26.1
Acquisitions, Dispositions and Other Transactions - Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended
Dec. 17, 2025
Sep. 05, 2025
Apr. 17, 2025
Mar. 18, 2025
Mar. 02, 2025
Jun. 30, 2026
Sep. 25, 2025
Jun. 30, 2025
Aug. 05, 2026
Dec. 31, 2025
Business Combination [Line Items]                    
Goodwill           $ 37,524       $ 37,703
Cash flows from investing activities           0   $ 337    
Finite-lived intangible assets, period decrease           15        
Goodwill, measurement period adjustment           14        
Increase in other noncurrent assets and liabilities, net           1        
MoneyPass Group | Financial Segment | Subsequent Event                    
Business Combination [Line Items]                    
Percentage of interest owned in affiliate                 49.00%  
StoneCastle                    
Business Combination [Line Items]                    
Business combination, consideration transferred $ 416                  
Cash acquired from acquisition 4                  
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles 165                  
Business combination, recognized identifiable assets acquired and liabilities assumed, other noncurrent assets $ 8                  
StoneCastle | Acquired software and technology                    
Business Combination [Line Items]                    
Acquired finite-lived intangible assets, weighted average useful life 7 years                  
Goodwill $ 247                  
CCV Group B.V.                    
Business Combination [Line Items]                    
Cash acquired from acquisition       $ 34            
Goodwill           120        
Business combination, recognized identifiable assets acquired and liabilities assumed, other noncurrent assets           24        
Cash flows from investing activities       $ 219            
CCV Group B.V. | Acquired software and technology                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles           $ 2        
Acquired finite-lived intangible assets, weighted average useful life           1 year        
CCV Group B.V. | Customer relationships                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles           $ 103        
Acquired finite-lived intangible assets, weighted average useful life           8 years        
CCV Group B.V. | Trademarks                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles           $ 4        
Acquired finite-lived intangible assets, weighted average useful life           2 years        
Payfare                    
Business Combination [Line Items]                    
Cash acquired from acquisition         $ 46          
Goodwill         56          
Business combination, recognized identifiable assets acquired and liabilities assumed, other noncurrent assets         49          
Cash flows from investing activities         95          
Payfare | Acquired software and technology                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles         $ 22          
Acquired finite-lived intangible assets, weighted average useful life         7 years          
Payfare | Customer Relationships                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles         $ 14          
Acquired finite-lived intangible assets, weighted average useful life         14 years          
Pinch Payments, Money Money Acquisitions, and CardFree                    
Business Combination [Line Items]                    
Goodwill             $ 73      
Cash flows from investing activities             127      
Earn-out provisions estimated fair value             35      
Net assumed liabilities             5      
Pinch Payments, Money Money Acquisitions, and CardFree | Acquired software and technology                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles             $ 31      
Acquired finite-lived intangible assets, weighted average useful life             7 years      
Pinch Payments, Money Money Acquisitions, and CardFree | Customer Relationships                    
Business Combination [Line Items]                    
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles             $ 18      
Acquired finite-lived intangible assets, weighted average useful life             6 years      
ICICI Merchant Services Private Limited                    
Business Combination [Line Items]                    
Cash flows from investing activities     $ 22              
Business combination, voting equity interest acquired, percentage     19.00%     19.00%        
AIBMS                    
Business Combination [Line Items]                    
Business combination, consideration transferred   $ 420                
Cash acquired from acquisition   $ 195                
Business combination, voting equity interest acquired, percentage   49.90%