v3.25.4
Acquisitions and Dispositions (Allocation of Acquisition Costs) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Business Combination [Line Items]      
Cash $ 726    
Estimated fair value of deferred/contingent consideration 116    
Fair value of previously-held equity method investment 15    
Total consideration 857 $ 9,400  
Allocation of purchase price:      
Goodwill 24,337 $ 23,306 $ 17,231
Current Fiscal Period Acquisitions      
Business Combination [Line Items]      
Cash 726    
Estimated fair value of deferred/contingent consideration 116    
Fair value of previously-held equity method investment 15    
Total consideration 857    
Allocation of purchase price:      
Cash and cash equivalents 27    
Cash and cash equivalents held in a fiduciary capacity 47    
Net receivables 32    
Other current assets 6    
Goodwill 562    
Other intangible assets 295    
Fixed assets, net 4    
Right of use assets 4    
Other assets 8    
Total assets acquired 985    
Current liabilities 37    
Fiduciary liabilities 47    
Other liabilities 36    
Total liabilities assumed 120    
Non-controlling interests 8    
Net assets acquired $ 857