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Legal Matters - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended		109 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jul. 28, 2022 merchant
Loss Contingencies [Line Items]
Deposits into the litigation escrow account | $		$ 850	$ 0
U.S. Covered Litigation
Loss Contingencies [Line Items]
Provision for legal matters | $	$ 716	861	$ 0
Deposits into the litigation escrow account | $	$ 600	$ 850
Interchange Multidistrict Litigation
Loss Contingencies [Line Items]
Settlement percentage	55.00%	55.00%
Europe Merchant Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs				850
Number of claims settled				150
Number of claims pending				650
Europe Merchant Litigation | Threatened Litigation | Subsequent Event
Loss Contingencies [Line Items]
Number of plaintiffs				30

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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