Derivative Financial Instruments and Risk Management- Fair value hedges (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Derivatives Fair Value
Carrying Value of the Hedged Liabilities	$ 6,115	$ 5,810
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	(34)	(186)
Long-term debt due within one year
Derivatives Fair Value
Carrying Value of the Hedged Liabilities	602	483
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	$ 3	$ (16)
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt due within one year	Long-term debt due within one year
Long-term debt due after one year
Derivatives Fair Value
Carrying Value of the Hedged Liabilities	$ 5,513	$ 5,327
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	$ (37)	$ (170)
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt due after one year	Long-term debt due after one year

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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Amount of liability hedged in fair value hedging relationship.

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Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk. Excludes cumulative basis adjustment related to foreign exchange risk.

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