v3.25.4
Goodwill and other intangible assets - Intangible assets - Narrative (Detail) - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Finite Lived And Indefinite Lived Intangible Assets [Line Items]      
Intangible asset amortization expense $ 1.7 $ 1.8 $ 1.8
Estimated amortization expense - 2026 1.7    
Estimated amortization expense - 2027 1.6    
Estimated amortization expense - 2028 1.4    
Estimated amortization expense - 2029 1.4    
Estimated amortization expense - 2030 1.3    
Intangible assets with indefinite lives, excluding goodwill $ 18.9 $ 18.9