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Financial Instruments - Narrative (Details)
SFr in Millions, $ in Millions, € in Billions, ¥ in Billions, $ in Billions
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
derivative
Sep. 30, 2025
EUR (€)
Sep. 30, 2025
CNY (¥)
Sep. 30, 2025
CAD ($)
Sep. 30, 2025
CHF (SFr)
Dec. 31, 2024
USD ($)
Derivative [Line Items]              
Different types of derivatives, number | derivative   3          
Notional value $ 15,894 $ 15,894         $ 11,942
Gain on exchange rate movements (6,523) (6,523)         (6,967)
Designated as Hedging Instrument              
Derivative [Line Items]              
Notional value 5,016 5,016         $ 1,839
Net Investment Hedging              
Derivative [Line Items]              
Cumulative deferred gain   1,502          
Derivative deferred gain (loss) 122 (2,701)          
Net Investment Hedging | Line of Credit              
Derivative [Line Items]              
Cumulative deferred gain   37          
Derivative deferred gain (loss) 27 (37)          
Forward exchange contracts 18 40          
Net Investment Hedging | Designated as Hedging Instrument              
Derivative [Line Items]              
Gain on exchange rate movements 111 111          
Net Investment Hedging | Designated as Hedging Instrument | Intercompany Loans              
Derivative [Line Items]              
Euro-denominated notes and intercompany loans 21,000 21,000 € 17.9        
CNY-denominated intercompany loans 700 700   ¥ 5.2      
CAD-denominated intercompany loans 1,100 1,100     $ 1.5    
CHF-denominated intercompany loans 628 628       SFr 500  
Credit Default Swap              
Derivative [Line Items]              
Notional value 123 $ 123          
Maximum | Credit Default Swap              
Derivative [Line Items]              
Derivative term   22 months          
Maximum | Forecasted Transactions              
Derivative [Line Items]              
Derivative term   3 years          
Maximum | Commodity contracts              
Derivative [Line Items]              
Derivative term   3 years          
Credit Default Swap              
Derivative [Line Items]              
Notional value $ 104 $ 104          
Credit Default Swap | Maximum              
Derivative [Line Items]              
Derivative term   24 months