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Derivative Financial Instruments - Hedging Programs (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2025 | Dec. 31, 2024
Net Investment Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 7,200,000,000 | $ 6,200,000,000
Average remaining maturity | 9 months 18 days | 9 months 18 days
Interest Rate Swap | Fair Value Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 6,700,000,000 | $ 6,700,000,000
Average remaining maturity | 4 years 2 months 12 days | 4 years 6 months
Interest Rate Swap | Cash Flow Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 0 | $ 0
Foreign exchange contracts |  |
Derivative Financial Instruments |  |
Gains (losses) expected to be reclassified to net income within the next 12 months | (104,000,000) |
Foreign exchange contracts | Not Designated as Hedging Instrument, Economic Hedge |  |
Derivative Financial Instruments |  |
Notional amount | $ 6,300,000,000 | 7,400,000,000
Foreign exchange contracts | Not Designated as Hedging Instrument, Economic Hedge | Maximum |  |
Derivative Financial Instruments |  |
Term of contract | 1 year |
Foreign exchange contracts | Cash Flow Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 7,000,000,000.0 | 5,000,000,000.0
Net gains (losses) before taxes in accumulated other comprehensive income/(loss), cash flow hedges | $ 10,000,000 | 84,000,000
Maximum length of time hedged | 6 years |
Foreign exchange contracts | Net Investment Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 15,200,000,000 | 14,000,000,000.0
Foreign Exchange Forward | Cash Flow Hedging |  |
Derivative Financial Instruments |  |
Notional amount | $ 10,400,000,000 | $ 9,700,000,000
Average remaining maturity | 6 months | 7 months 6 days
Net gains (losses) before taxes in accumulated other comprehensive income/(loss), cash flow hedges | $ 100,000,000 | $ 415,000,000
Maximum length of time hedged | 2 years |
Gains (losses) expected to be reclassified to net income within the next 12 months | $ 44,000,000 |
Equity contracts hedging employee compensation obligations | Not Designated as Hedging Instrument, Economic Hedge |  |
Derivative Financial Instruments |  |
Notional amount | $ 1,300,000,000 | $ 1,500,000,000

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- Definition Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). + References No definition available. + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480870/815-30-50-1 + Details
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- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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- Definition Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 30 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480870/815-30-50-1 + Details
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