XML 111 R78.htm IDEA: XBRL DOCUMENT
v3.24.3

Settlement Guarantee Management - Additional Information (Detail) - USD ($) $ in Billions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023
Settlement Guarantee Management [Abstract] |  |
Maximum settlement exposure | $ 137.4 |
Average daily settlement exposure | 84.3 |
Total collateral | $ 7.7 | $ 6.2

X
- Definition Average Daily Settlement Exposure + References No definition available. + Details
Name: | v_AverageDailySettlementExposure
Namespace Prefix: | v_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum Settlement Exposure + References No definition available. + Details
Name: | v_MaximumSettlementExposure
Namespace Prefix: | v_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Disclosure - Settlement Guarantee Management [Abstract] + References No definition available. + Details
Name: | v_SettlementGuaranteeManagementAbstract
Namespace Prefix: | v_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total of cash deposits and non-cash collateral assets including cash equivalents, pledged securities at market value, letters of credit and guarantees. + References No definition available. + Details
Name: | v_TotalCollateral
Namespace Prefix: | v_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant