v3.26.3
Financial Instruments - Effect of Derivative Instruments on Income and Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Revenues $ 127,577 $ 102,346 $ 357,269 $ 289,007
Other income (expense), net (8,221) 12,759 127,478 26,604
Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense        
Foreign exchange derivatives        
Total gains (losses) $ 132 $ 174 $ (996) $ 384
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (expense), net Other income (expense), net Other income (expense), net Other income (expense), net
Income Statement Location [Axis]: us-gaap:Revenues        
Foreign exchange derivatives        
Total gains (losses) $ 194 $ (207) $ 120 $ (60)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Revenues Revenues Revenues Revenues
Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments $ (286) $ 76 $ (1,067) $ 321
Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:Revenues | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 0 0 0 0
Equity derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 83 0 (296) 0
Equity derivatives | Income Statement Location [Axis]: us-gaap:Revenues | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 0 0 0 0
Credit derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 277 0 200 0
Credit derivatives | Income Statement Location [Axis]: us-gaap:Revenues | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 0 0 0 0
Other derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 27 11 11 (84)
Other derivatives | Income Statement Location [Axis]: us-gaap:Revenues | Not Designated as Hedging Instrument        
Foreign exchange derivatives        
Derivatives not designated as hedging instruments 0 0 0 0
Cash flow hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense        
Foreign exchange derivatives        
Amount included in the assessment of effectiveness 0 0 0 0
Amount excluded from the assessment of effectiveness (amortized) 0 0 0 0
Cash flow hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:Revenues        
Foreign exchange derivatives        
Amount included in the assessment of effectiveness 196 (237) 82 (133)
Amount excluded from the assessment of effectiveness (amortized) (2) 30 38 73
Fair value hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense        
Foreign exchange derivatives        
Hedged items     0 (9)
Amount included in the assessment of effectiveness     0 9
Amount excluded from the assessment of effectiveness     0 1
Fair value hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:Revenues        
Foreign exchange derivatives        
Hedged items     0 0
Amount included in the assessment of effectiveness     0 0
Amount excluded from the assessment of effectiveness     0 0
Fair value hedges | Interest rate derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense        
Foreign exchange derivatives        
Hedged items 257 0 257 0
Fair value hedges | Interest rate derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense | Derivatives designated as hedging instruments:        
Foreign exchange derivatives        
Derivatives designated as hedging instruments (257) 0 (257) 0
Fair value hedges | Interest rate derivatives | Income Statement Location [Axis]: us-gaap:Revenues        
Foreign exchange derivatives        
Hedged items 0 0 0 0
Fair value hedges | Interest rate derivatives | Income Statement Location [Axis]: us-gaap:Revenues | Derivatives designated as hedging instruments:        
Foreign exchange derivatives        
Derivatives designated as hedging instruments 0 0 0 0
Net investment hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense        
Foreign exchange derivatives        
Amount excluded from the assessment of effectiveness 31 87 156 146
Net investment hedges | Foreign exchange derivatives | Income Statement Location [Axis]: us-gaap:Revenues        
Foreign exchange derivatives        
Amount excluded from the assessment of effectiveness $ 0 $ 0 $ 0 $ 0