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Summary of Significant Accounting Policies - Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]      
Amortization of purchased intangibles $ 231 $ 280 $ 329
Accumulated amortization on intangible assets $ 1,830 $ 1,660  
Distribution and customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life (in years) 5 years    
Technology-Based Intangible Assets      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life (in years) 10 years    
Other Intangible Assets      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life (in years) 3 years