U.S. and Europe Retrospective Responsibility Plans (Details) $ / shares in Units, € in Millions, shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 USD ($) $ / shares shares		Sep. 30, 2016 USD ($) shares	Jun. 21, 2016
Restricted Cash and Cash Equivalents Items [Line Items]
Escrow account | $		$ 1,028		$ 1,027
VE territory covered loss, maximum amount of loss to allow adjustment of conversion rate during six-month period | €	€ 20
Right to recover for covered losses | $		$ 128	[1],[2]	$ 34
Closing stock price | $ / shares		$ 78.02
U.K.& I preferred stock
Restricted Cash and Cash Equivalents Items [Line Items]
Preferred stock, shares outstanding | shares		2		2
Europe preferred stock
Restricted Cash and Cash Equivalents Items [Line Items]
Preferred stock, shares outstanding | shares		3		3
Visa Europe
Restricted Cash and Cash Equivalents Items [Line Items]
Initial conversion rate of U.K.&I and Europe preferred stock into Class A equivalent preferred stock					13.952

[1] Figures in the table may not recalculate exactly due to rounding. As-converted and book values are based on unrounded numbers.

[2] The as-converted value of preferred stock is calculated as the product of: (a) 2 million and 3 million shares of the U.K.&I and Europe preferred stock outstanding, respectively, as of December 31, 2016; (b) the 13.952 class A common stock conversion rate applicable to both the U.K.&I and Europe preferred stock as of December 31, 2016; and (c) $78.02, Visa's class A common stock closing stock price as of December 31, 2016.