XML 114 R92.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Stockholders' Equity Effect of Escrow Funding on the Company Repurchaseing its Common Stock (Details) shares in Millions, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 conversion_rate shares | Sep. 30, 2016 USD ($) conversion_rate | Mar. 19, 2015 conversion_rate
Class of Stock [Line Items] |  |  |  |
As-converted class B common stock outstanding after deposits | [1] | 2,422 |  |
Deposit into Litigation Escrow |  |  |  |
Class of Stock [Line Items] |  |  |  |
Deposits under the retrospective responsibility plan | $ |  |  | $ 0 |
Class A common stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
As-converted class B common stock outstanding after deposits | [1],[2] | 1,871 |  |
Class B common stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, conversion rate | conversion_rate | [3] | 1.6483 | 1.6483 | 1.6483
As-converted class B common stock outstanding after deposits | [1] | 405 |  |
[1] | Figures in the table may not recalculate exactly due to rounding. As-converted class A common stock is calculated based on unrounded numbers.
[2] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmVhOWM1MDkzNjQ1MjRmNzk4OTM0M2I5ZDEyODM0M2JlfFRleHRTZWxlY3Rpb246OENBNzc3NzIxMjY1M0Y0NTY4MDI2RUY3NTNDRjY1NjMM}
[3] | The class B to class A common stock conversion rate is presented on a rounded basis. Conversion calculations for dividend payments are based on a conversion rate rounded to the tenth decimal.

X
- 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 No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 + Details
Name: | us-gaap_ConversionOfStockSharesConverted1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Stock, Conversion Rate + References No definition available. + Details
Name: | v_CommonStockConversionRate
Namespace Prefix: | v_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deposits To Litigation Escrow Account + References No definition available. + Details
Name: | v_DepositsToLitigationEscrowAccount
Namespace Prefix: | v_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis=v_DepositIntoLitigationEscrowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |