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Investments - Carrying Value of Measurement Alternative Investments (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Investments, Debt and Equity Securities [Abstract] |  |
Initial cost basis | $ 693 |
Upward adjustments | 645 |
Downward adjustments (including impairment) | (198) |
Measurement alternative | $ 1,140 | $ 1,008

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- Definition Alternative Investment, Carrying Value + References No definition available. + Details
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- Definition Alternative Investment, Downward Price Adjustment Including Impairment, Cumulative Amount + References No definition available. + Details
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Balance Type: | credit
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- Definition Alternative Investment, Initial Cost Basis + References No definition available. + Details
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Balance Type: | debit
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- Definition Alternative Investment, Upward Price Adjustment, Cumulative Amount + References No definition available. + Details
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Namespace Prefix: | ma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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