v3.26.1
Goodwill and Other Intangibles (Amortized Intangible Assets) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]    
Gross Cost $ 7,485 $ 7,567
Accumulated Amortization 2,878 2,821
Net Carrying Amount 4,607 4,746
Client relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 7,025 7,091
Accumulated Amortization 2,483 2,422
Net Carrying Amount 4,542 4,669
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 460 476
Accumulated Amortization 395 399
Net Carrying Amount $ 65 $ 77