XML 69 R50.htm IDEA: XBRL DOCUMENT
v3.26.1

Investments - Unrealized Gains (Losses) Included in the Carrying Value of Measurement Alternative Investments and Marketable Securities (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract] |  |
Upward adjustments | $ 0 | $ 2
Downward adjustments (including impairment) | (30) | (3)
Unrealized gains (losses), net | $ (45) | $ (32)

X
- Definition Alternative Investment, Downward Price Adjustment Including Impairment, Annual Amount + References No definition available. + Details
Name: | ma_AlternativeInvestmentDownwardPriceAdjustmentIncludingImpairmentAnnualAmount
Namespace Prefix: | ma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Alternative Investments, Upward Price Adjustment, Annual Amount + References No definition available. + Details
Name: | ma_AlternativeInvestmentsUpwardPriceAdjustmentAnnualAmount
Namespace Prefix: | ma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_MarketableSecuritiesUnrealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration