U.S. and Europe Retrospective Responsibility Plans - Preferred Stock (Details) $ / shares in Units, shares in Millions, $ in Millions		Mar. 31, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) shares	Jun. 21, 2016
Class of Stock [Line Items]
As-converted value of preferred stock	[1],[2]	$ 6,864
Book value of preferred stock	[1]	5,597
Right to recover for covered losses		(77)	$ (34)
Total recovery for covered losses available, as converted	[1],[2]	6,787
Total recovery for covered losses available, book value	[1]	$ 5,520
Preferred stock, conversion ratio			13.952
Closing stock price | $ / shares		$ 88.87
U.K.& I preferred stock
Class of Stock [Line Items]
As-converted value of preferred stock	[1],[2]	$ 2,951
Preferred stock		$ 2,397	$ 2,516
Preferred stock, shares outstanding | shares		2	2
Preferred stock, conversion ratio		13.3880
Europe preferred stock
Class of Stock [Line Items]
As-converted value of preferred stock	[1],[2]	$ 3,913
Preferred stock		$ 3,200	$ 3,201
Preferred stock, shares outstanding | shares		3	3
Preferred stock, conversion ratio		13.9480
Visa Europe
Class of Stock [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 March 31, 2017; (b)13.388 and 13.948, the class A common stock conversion rate applicable to the U.K.&I and Europe preferred stock as of March 31, 2017, respectively; and (c) $88.87, Visa's class A common stock closing stock price as of March 31, 2017.