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- Definition

Loss Contingency, Claims Dismissed, Number Of Years

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- Definition

Loss Contingency, Damages, Period

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- Definition

Loss Contingency, Damages Sought, Per Claim

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- Definition

Loss Contingency, Unsolicited Advertisements

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- Definition

Percent Of Settlement Reporting Entity Would Pay

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- Definition

Percentage Of Mastercard's U.S. Interchange Volume Represented By Opt-Out Merchant And Damages Class Settlements

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- Definition

Percentage Of Opt-Out Merchants To Terminate

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- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

+ References

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
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- Definition

Number of claims settled.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

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- Definition

Number of defendants named in a legal action.

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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Number of pending claims pertaining to a loss contingency.

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Legal and Regulatory Proceedings (Details) £ in Millions, € in Billions		1 Months Ended	6 Months Ended			12 Months Ended	66 Months Ended
	Jun. 30, 2024 USD ($)	Dec. 31, 2023 GBP (£)	Jun. 30, 2024 USD ($) defendant fax	Jun. 30, 2024 GBP (£) defendant fax	Jun. 30, 2024 EUR (€) defendant fax	Dec. 31, 2011 plaintiff	Jun. 30, 2024 USD ($) merchant	Jun. 30, 2024 GBP (£)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018
Legal And Regulatory
Accrued litigation	$ 525,000,000		$ 525,000,000				$ 525,000,000			$ 723,000,000
Unsolicited faxes \| fax			381,000	381,000	381,000
Damages sought per fax (in usd per fax)			$ 500
Event Involving Visa Parties, Member Banks and Mastercard
Legal And Regulatory
Percent of settlement Mastercard would pay						12.00%
Event Involving Member Banks and Mastercard
Legal And Regulatory
Percent of settlement Mastercard would pay						36.00%
U.S. Merchant Lawsuit Settlement
Legal And Regulatory
Accrued litigation	$ 432,000,000		$ 432,000,000				$ 432,000,000			$ 596,000,000
Maximum \| U.S. Merchant Litigation - Class Litigation
Legal And Regulatory
Percentage of merchant opt outs to terminate agreement												25.00%
Minimum \| U.S. Merchant Litigation - Class Litigation
Legal And Regulatory
Mastercard's U.S. interchange volume represented by opt-out merchant and damages class settlement, percentage	90.00%		90.00%				90.00%	90.00%
2022 Mastercard and Visa Proposed Collective Action Complaint in the U.K.
Legal And Regulatory
Amount of damages sought (that exceeds)	$ 1,300,000,000	£ 1,000
Proposed U.K. Interchange Collective Action
Legal And Regulatory
Amount of damages sought (that exceeds)			$ 13,000,000,000	£ 10,000
Claims dismissed, number of years			5 years	5 years	5 years
ATM Operators Complaint
Legal And Regulatory
Amount of damages sought (that exceeds)	1,000,000,000
Number of plaintiffs in case \| plaintiff						13
Number of pending claims											3
Loss contingency accrual									$ 93,000,000
U.S. Liability Shift Litigation
Legal And Regulatory
Amount of damages sought (that exceeds)			$ 1,000,000,000
Number of defendants \| defendant			4	4	4
Portugal Proposed Interchange Collective Action
Legal And Regulatory
Amount of damages sought (that exceeds)			$ 400,000,000		€ 0.4
Period of damages			20 years	20 years	20 years
Unresolved \| U.K. Merchant Lawsuit Settlement
Legal And Regulatory
Unresolved damages claims	$ 600,000,000		$ 600,000,000				$ 600,000,000	£ 500
Settled Litigation \| Minimum \| U.S. Merchant Litigation - Opt-Out
Legal And Regulatory
Number of claims settled \| merchant							250