Derivative and Non-derivative Financial Instruments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Aggregate notional amount of derivative contracts		$ 1,600		$ 1,600	$ 1,200
Additional derivative contracts				202
Other Nonoperating Income (Expense)
Derivative [Line Items]
Gain (loss) on derivative instruments		(42)	$ 116	74
Visa Europe
Derivative [Line Items]
Aggregate notional amount of derivative contracts		900		900
Deferred cash consideration liability	[1]	1,236		1,236
Net investment in Visa Europe	[1]	$ 18,800		$ 18,800

[1] the fair value of deferred cash consideration of €1.0 billion, plus 4% compound annual interest, payable on the third anniversary of the Closing, discounted at a rate of 1.2%.