Settlement Guarantee Management - Collateral (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Settlement Guarantee Management [Abstract]
Restricted cash equivalents	$ 1,648	$ 1,708
Pledged securities at market value	259	192
Letters of credit	1,293	1,382
Guarantees	477	860
Total	$ 3,677	$ 4,142

The Company holds cash deposits from certain customers in order to ensure their performance of settlement obligations arising from credit, debit and travelers cheque product clearings. The cash collateral assets are restricted and fully offset by corresponding liabilities and both balances are presented on the consolidated balance sheet.

No definition available.

Name:	v_CashCollateralReceived
Namespace Prefix:	v_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant