Derivative Instruments and Hedging Activities - Effect of Derivative Instruments Designated as Cash Flow Hedges and Not Designated as Hedges on Consolidated Statement of Income (Detail) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivatives designated as hedges
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 174	$ (179)	$ (22)	$ (77)
Derivatives designated as hedges | Cross currency interest rate swaps
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 193	$ (159)	$ 47	$ (27)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of services and sales	Cost of services and sales	Cost of services and sales	Cost of services and sales
Derivatives designated as hedges | Cross currency interest rate swaps
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (21)	$ (22)	$ (65)	$ (66)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest	Interest	Interest	Interest
Derivatives designated as hedges | Commodity contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income		$ (5)	$ (10)	$ 2
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total Revenue	Total Revenue	Total Revenue	Total Revenue
Derivatives designated as hedges | Foreign exchange contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ 10	$ 7	$ 12	$ 14
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of services and sales	Cost of services and sales	Cost of services and sales	Cost of services and sales
Derivatives designated as hedges | Foreign exchange contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (8)		$ (6)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Total Revenue	Total Revenue	Total Revenue	Total Revenue
Derivatives not designated as hedges | Foreign exchange contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Recognized in Income	$ (13)	$ 5	$ 10	$ (21)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of services and sales	Cost of services and sales	Cost of services and sales	Cost of services and sales