Derivative Financial Instruments and Risk Management - Schedule of Gains (Losses) on Derivatives Instruments (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Derivative Instruments, Gain (Loss)
Gains (Losses) Recognized on Hedged Instruments	$ (41)	$ 17
Gains (Losses) Recognized in AOCI	(6)	108
Gains (Losses) Reclassified from AOCI	9	111
Designated derivatives \| Cash Flow Hedges \| Foreign exchange contracts
Derivative Instruments, Gain (Loss)
Gains (Losses) Recognized on Hedged Instruments	0	0
Gains (Losses) Recognized in AOCI	(4)	97
Gains (Losses) Reclassified from AOCI	8	95
Designated derivatives \| Cash Flow Hedges \| Interest rate contracts
Derivative Instruments, Gain (Loss)
Gains (Losses) Recognized on Hedged Instruments	0	0
Gains (Losses) Recognized in AOCI	(2)	11
Gains (Losses) Reclassified from AOCI	1	16
Designated derivatives \| Fair Value Hedges \| Interest rate contracts
Derivative Instruments, Gain (Loss)
Gains (Losses) Recognized on Hedged Instruments	(7)	(20)
Gains (Losses) Recognized in AOCI	0	0
Gains (Losses) Reclassified from AOCI	0	0
Undesignated derivatives \| Foreign exchange contracts
Derivative Instruments, Gain (Loss)
Gains (Losses) Recognized on Hedged Instruments	(34)	37
Gains (Losses) Recognized in AOCI	0	0
Gains (Losses) Reclassified from AOCI	$ 0	$ 0

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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