Debt	12 Months Ended
Sep. 30, 2013
Debt Disclosure [Abstract]
Debt	Note 9—Debt Commercial paper program. Visa maintains a commercial paper program to support its working capital requirements and for other general corporate purposes. On February 7, 2013, the Company replaced the existing $500 million program with a new commercial paper program. Under the new program, the Company is authorized to issue up to $3.0 billion in outstanding notes, with maturities up to 397 days from the date of issuance. The Company had no outstanding obligations under the new program at September 30, 2013. Credit facility. On January 31, 2013, the Company entered into an unsecured $3.0 billion revolving credit facility. This credit facility, which expires on January 30, 2014, replaced the Company's existing $3.0 billion credit facility, which would have expired on February 15, 2013. The new credit facility contains covenants and events of default customary for facilities of this type. The participating lenders in the new credit facility include affiliates of certain holders of the Company's class B and class C common stock and some of the Company's clients or affiliates of its clients. The new credit facility is maintained to provide liquidity in the event of settlement failures by the Company's clients, to back up the commercial paper program and for general corporate purposes. Interest on borrowings under the Credit Facility would be charged at the London Interbank Offered Rate ("LIBOR") or an alternative base rate, in each case plus applicable margins that fluctuate based on the applicable credit rating of the Company's senior unsecured long-term debt. Visa also agreed to pay a commitment fee that fluctuates based on the credit rating of the Company's senior unsecured long-term debt. Currently, the applicable margin is 0.00% to 0.75% depending on the type of the loan, and the commitment fee is 0.05%. There were no borrowings under this facility and the Company was in compliance with all related covenants at September 30, 2013.

Note 9—Debt

Commercial paper program. Visa maintains a commercial paper program to support its working capital requirements and for other general corporate purposes. On February 7, 2013, the Company replaced the existing $500 million program with a new commercial paper program. Under the new program, the Company is authorized to issue up to $3.0 billion in outstanding notes, with maturities up to 397 days from the date of issuance. The Company had no outstanding obligations under the new program at September 30, 2013.

Credit facility. On January 31, 2013, the Company entered into an unsecured $3.0 billion revolving credit facility. This credit facility, which expires on January 30, 2014, replaced the Company's existing $3.0 billion credit facility, which would have expired on February 15, 2013. The new credit facility contains covenants and events of default customary for facilities of this type. The participating lenders in the new credit facility include affiliates of certain holders of the Company's class B and class C common stock and some of the Company's clients or affiliates of its clients. The new credit facility is maintained to provide liquidity in the event of settlement failures by the Company's clients, to back up the commercial paper program and for general corporate purposes.

Interest on borrowings under the Credit Facility would be charged at the London Interbank Offered Rate ("LIBOR") or an alternative base rate, in each case plus applicable margins that fluctuate based on the applicable credit rating of the Company's senior unsecured long-term debt. Visa also agreed to pay a commitment fee that fluctuates based on the credit rating of the Company's senior unsecured long-term debt. Currently, the applicable margin is 0.00% to 0.75% depending on the type of the loan, and the commitment fee is 0.05%. There were no borrowings under this facility and the Company was in compliance with all related covenants at September 30, 2013.