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Fair Value Measurements and Investments - Additional Information (Detail) - USD ($) $ in Millions		Feb. 01, 2015	Sep. 30, 2016	Jun. 21, 2016	Dec. 31, 2015	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount			$ 0
Put option, fair value	[1]		0			$ 255
Non-marketable equity investments			46			45
Goodwill and intangible asset impairment		$ 0
Principal amount			16,000		$ 16,000
Trading assets, mutual fund investments related to various employee compensation plans			71			66
Visa Europe
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Share capital of Visa Europe acquired (percent)				100.00%
Fair Value, Measurements, Recurring | Level 3 | Visa Europe put option
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Put option, fair value			$ 0			$ 255
[1] On June 21, 2016, the Company acquired 100% of the share capital of Visa Europe, effected by the Visa Europe board of directors' exercise of the amended Visa Europe put option. Therefore, the Visa Europe put option was contractually terminated as a result of the transaction. See Note 2—Acquisition of Visa Europe.

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

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Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Value of the other investment not readily marketable determined by management based upon fair value methods, including pricing of similar securities and valuation techniques, that was used to record the investment for financial reporting purposes.

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