Financial Instruments - Effect of Derivative Instruments on Income and Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Amount included in the assessment of effectiveness
Revenues	$ 96,428	$ 84,742	$ 186,662	$ 165,281
Other income (expense), net	2,662	126	13,845	2,969
Revenues
Foreign exchange contracts
Total gains (losses)	$ (112)	$ 102	148	174
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenues	Revenues
Other income (expense), net
Foreign exchange contracts
Total gains (losses)	$ 185	$ 38	211	173
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income (expense), net	Other income (expense), net
Total
Amount included in the assessment of effectiveness
Total	$ (2,020)	$ 390	(2,626)	685
Foreign exchange contracts | Revenues | Not Designated as Hedging Instrument
Foreign exchange contracts
Derivatives not designated as hedging instruments	0	0	0	0
Foreign exchange contracts | Other income (expense), net | Not Designated as Hedging Instrument
Foreign exchange contracts
Derivatives not designated as hedging instruments	180	(22)	245	(1)
Other derivatives | Revenues | Not Designated as Hedging Instrument
Foreign exchange contracts
Derivatives not designated as hedging instruments	0	0	0	0
Other derivatives | Other income (expense), net | Not Designated as Hedging Instrument
Foreign exchange contracts
Derivatives not designated as hedging instruments	(24)	26	(95)	102
Cash flow hedges | Foreign exchange contracts
Foreign exchange contracts
Amount included in the assessment of effectiveness	(1,050)	277	(1,389)	432
Amount excluded from the assessment of effectiveness	(108)	(7)	(169)	51
Cash flow hedges | Foreign exchange contracts | Revenues
Foreign exchange contracts
Amount reclassified from AOCI to income	(138)	106	104	180
Amount excluded from the assessment of effectiveness (amortized)	26	(4)	44	(6)
Cash flow hedges | Foreign exchange contracts | Other income (expense), net
Foreign exchange contracts
Amount reclassified from AOCI to income	0	0	0	0
Amount excluded from the assessment of effectiveness (amortized)	0	0	0	0
Fair value hedges | Foreign exchange contracts | Revenues
Foreign exchange contracts
Hedged items	0	0	0	0
Derivatives designated as hedging instruments	0	0	0	0
Amount excluded from the assessment of effectiveness	0	0	0	0
Fair value hedges | Foreign exchange contracts | Other income (expense), net
Foreign exchange contracts
Hedged items	0	(9)	(9)	(25)
Derivatives designated as hedging instruments	0	9	9	24
Amount excluded from the assessment of effectiveness	0	3	1	6
Net investment hedges | Foreign exchange contracts
Amount included in the assessment of effectiveness
Foreign exchange contracts	(643)	120	(849)	202
Net investment hedges | Foreign exchange contracts | Revenues
Foreign exchange contracts
Amount excluded from the assessment of effectiveness	0	0	0	0
Net investment hedges | Foreign exchange contracts | Other income (expense), net
Foreign exchange contracts
Amount excluded from the assessment of effectiveness	29	31	60	67
Net investment hedges | Foreign currency-denominated debt
Amount included in the assessment of effectiveness
Foreign exchange contracts	$ (219)	$ 0	$ (219)	$ 0