v3.3.0.814
Intangible Assets, Net - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Apr. 30, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]        
Customer relationships $ 6,800      
Tradename 2,600      
Visa Europe franchise right 1,500      
Amortization expense related to finite-lived intangible assets 63 $ 66 $ 69  
Impairment of Intangible Assets (Excluding Goodwill) 0 0 $ 0  
Acquired Indefinite-lived Intangible Assets [Line Items]        
Goodwill $ 11,825 11,753    
Share capital of Visa Europe acquired (percent)       100.00%
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 6 years 8 months 12 days      
Previously Held Minority Interest Ownership [Member]        
Acquired Indefinite-lived Intangible Assets [Line Items]        
Goodwill $ 72 60    
Total purchase consideration 116 170    
Finite-lived Intangible Assets Acquired 13      
Indefinite-lived Intangible Assets Acquired   $ 126    
Licensing Agreements [Member] | Strategic Partner [Member]        
Acquired Indefinite-lived Intangible Assets [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 15      
Goodwill $ 12