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Summary of Significant Accounting Policies - Additional Information (Detail)			12 Months Ended
	Mar. 19, 2015	Feb. 01, 2015 USD ($)	Sep. 30, 2016 USD ($)	Jun. 21, 2016
Significant Accounting Policies [Line Items]
Number of Countries in which Entity Operates (more than)			200
Number of Reportable Segments			1
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 0
Goodwill, Impairment Loss		$ 0
Minimum
Significant Accounting Policies [Line Items]
Acquired long-lived intangible assets useful life			3 years
Maximum
Significant Accounting Policies [Line Items]
Acquired long-lived intangible assets useful life			15 years
Furniture and Fixtures | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life			2 years
Furniture and Fixtures | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life			10 years
Building Improvements | Minimum
Significant Accounting Policies [Line Items]
Estimated useful life			3 years
Building Improvements | Maximum
Significant Accounting Policies [Line Items]
Estimated useful life			40 years
Building
Significant Accounting Policies [Line Items]
Estimated useful life			40 years
Class A common stock
Significant Accounting Policies [Line Items]
Common stock split, conversion ratio	4
U.S. Pension Plans
Significant Accounting Policies [Line Items]
Expected average employee future service period for United States plans (in years)			9 years
Non-U.S. Pension Plans
Significant Accounting Policies [Line Items]
Expected average employee future service period for United States plans (in years)			12 years
Visa Europe
Significant Accounting Policies [Line Items]
Share capital of Visa Europe acquired (percent)				100.00%

X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

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- Definition

The number of countries in which the entity operates as of balance sheet date.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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X

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Average Remaining Service Period of Active Employees

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[Line Items] for Significant Accounting Policies [Table]

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