Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets	$ 1,597	$ 790
Fair value of derivative liabilities	1,559	629
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, aggregate notional value	2,384	4,147
Net investment hedge contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, aggregate notional value	7,456	7,319
Cash Flow Hedges \| Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Expected transfer of gains (net of taxes) for interest rate cash flow hedges to earnings during the next 12 months	$ 21
Hedged forecasted transaction period	2 years 8 months
Net Investment Hedging \| Net investment hedge contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, aggregate notional value	$ 7,500
Other Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets	1,347	377
Other Assets
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative assets	250	413
Other Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative liabilities	1,209	421
Other Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivative liabilities	$ 350	$ 208

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

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Nominal or face amount used to calculate payment on derivative.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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