Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2016		Jun. 30, 2016		Jul. 21, 2016	Jun. 21, 2016	Sep. 30, 2015
Stockholders Equity Note [Line Items]
Stock Repurchase Remaining Authorized Amount		$ 2,500		$ 2,500
Dividends, Cash		$ 335		$ 1,011
Class C common stock
Stockholders Equity Note [Line Items]
Common shares held by Visa Europe at closing (in shares)							550,000
Common shares held by Visa Europe at closing	[1]						$ (170)
Class A common stock
Stockholders Equity Note [Line Items]
Common shares held by Visa Europe at closing (in shares)		1,891,000,000	[2]	1,891,000,000	[2]			1,950,000,000
Subsequent Event
Stockholders Equity Note [Line Items]
Stock Repurchase Program, Authorized Amount						$ 5,000
Subsequent Event | Class A common stock
Stockholders Equity Note [Line Items]
Dividends Payable, Amount Per Share						$ 0.14

[1] the fair value of the Visa class C common stock held by Visa Europe as of the Closing.

[2] Class A common stock shares outstanding reflect repurchases settled on or before June 30, 2016. The Company repurchased an additional 2 million shares at the end of June, which did not settle until July 2016.