Basis of Presentation and Summary of Significant Accounting Policies - Goodwill Rollforward (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Goodwill [Roll Forward] | ||||
| Goodwill, beginning balance | $ 37,703 | |||
| Goodwill, measurement period adjustment | 16 | |||
| Dispositions (see Note 4) | (173) | |||
| Goodwill impairment | $ (6,452) | $ 0 | (6,452) | $ 0 |
| Foreign currency translation | (141) | |||
| Goodwill, ending balance | 30,953 | 30,953 | ||
| Merchant Segment | ||||
| Goodwill [Roll Forward] | ||||
| Goodwill, beginning balance | 23,106 | |||
| Goodwill, measurement period adjustment | 16 | |||
| Dispositions (see Note 4) | 0 | |||
| Goodwill impairment | (3,692) | |||
| Foreign currency translation | (115) | |||
| Goodwill, ending balance | 19,315 | 19,315 | ||
| Financial Segment | ||||
| Goodwill [Roll Forward] | ||||
| Goodwill, beginning balance | 14,597 | |||
| Goodwill, measurement period adjustment | 0 | |||
| Dispositions (see Note 4) | (173) | |||
| Goodwill impairment | (2,760) | |||
| Foreign currency translation | (26) | |||
| Goodwill, ending balance | $ 11,638 | $ 11,638 | ||
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) from measurement period adjustment of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of decrease in goodwill acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized, from divestiture. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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