Acquisitions	6 Months Ended
Mar. 31, 2025
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisitions	Note 2—Acquisitions In December 2024, Visa acquired Featurespace Limited, a developer of real-time artificial intelligence payments protection technology that prevents and mitigates payments fraud and financial crime risks, for a purchase consideration of $946 million. The Company allocated $152 million of the purchase consideration to technology, customer relationships, other net assets acquired and deferred tax liabilities and the remaining $794 million to goodwill.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-5

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 805
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/805/tableOfContent

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