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Fair Values - Not Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Card Member Receivables |  |
Fair Values (Textuals) |  |
Financing receivables, gross | $ 59,775 | $ 60,411
Card Member Loans |  |
Fair Values (Textuals) |  |
Financing receivables, gross | 126,619 | 125,995
Variable Interest Entity, Primary Beneficiary | Card Member Receivables |  |
Fair Values (Textuals) |  |
Financing receivables, gross | 4,851 | 4,587
Variable Interest Entity, Primary Beneficiary | Card Member Loans |  |
Fair Values (Textuals) |  |
Financing receivables, gross | 27,325 | 28,590
Carrying Value |  |
Financial assets for which carrying values equal or approximate fair value |  |
Cash and cash equivalents | 54,000 | 47,000
Other financial assets | 63,000 | 63,000
Financial assets carried at other than fair value |  |
Card Member and Other loans, less reserves | 129,000 | 128,000
Financial Liabilities: |  |
Financial liabilities for which carrying values equal or approximate fair value | 152,000 | 143,000
Financial liabilities carried at other than fair value |  |
Long-term debt | 49,000 | 48,000
Fair Values (Textuals) |  |
Long-term debt | 49,000 | 48,000
Carrying Value | Certificates of Deposit |  |
Financial liabilities carried at other than fair value |  |
Financial liabilities | 16,000 | 19,000
Corresponding Fair Value Amount |  |
Financial assets for which carrying values equal or approximate fair value |  |
Cash and cash equivalents | 54,000 | 47,000
Other financial assets | 63,000 | 63,000
Financial Liabilities: |  |
Financial liabilities for which carrying values equal or approximate fair value | 152,000 | 143,000
Corresponding Fair Value Amount | Variable Interest Entity, Primary Beneficiary | Card Member Receivables |  |
Fair Values (Textuals) |  |
Financing receivables, gross | 4,800 | 4,600
Corresponding Fair Value Amount | Level 1 |  |
Financial assets for which carrying values equal or approximate fair value |  |
Cash and cash equivalents | 52,000 | 45,000
Other financial assets | 0 | 0
Financial Liabilities: |  |
Financial liabilities for which carrying values equal or approximate fair value | 0 | 0
Corresponding Fair Value Amount | Level 2 |  |
Financial assets for which carrying values equal or approximate fair value |  |
Cash and cash equivalents | 2,000 | 2,000
Other financial assets | 63,000 | 63,000
Financial Liabilities: |  |
Financial liabilities for which carrying values equal or approximate fair value | 152,000 | 143,000
Corresponding Fair Value Amount | Level 3 |  |
Financial assets for which carrying values equal or approximate fair value |  |
Cash and cash equivalents | 0 | 0
Other financial assets | 0 | 0
Financial Liabilities: |  |
Financial liabilities for which carrying values equal or approximate fair value | 0 | 0
Portion at Other than Fair Value Measurement |  |
Financial assets carried at other than fair value |  |
Card Member and Other loans, less reserves | 134,000 | 133,000
Financial liabilities carried at other than fair value |  |
Long-term debt | 49,000 | 48,000
Fair Values (Textuals) |  |
Long-term debt | 49,000 | 48,000
Portion at Other than Fair Value Measurement | Variable Interest Entity, Primary Beneficiary |  |
Financial liabilities carried at other than fair value |  |
Long-term debt | 13,300 | 13,300
Fair Values (Textuals) |  |
Long-term debt | 13,300 | 13,300
Portion at Other than Fair Value Measurement | Variable Interest Entity, Primary Beneficiary | Card Member Loans |  |
Fair Values (Textuals) |  |
Financing receivables, gross | 27,400 | 28,600
Portion at Other than Fair Value Measurement | Certificates of Deposit |  |
Financial liabilities carried at other than fair value |  |
Financial liabilities | 16,000 | 18,000
Portion at Other than Fair Value Measurement | Level 1 |  |
Financial assets carried at other than fair value |  |
Card Member and Other loans, less reserves | 0 | 0
Financial liabilities carried at other than fair value |  |
Long-term debt | 0 | 0
Fair Values (Textuals) |  |
Long-term debt | 0 | 0
Portion at Other than Fair Value Measurement | Level 1 | Certificates of Deposit |  |
Financial liabilities carried at other than fair value |  |
Financial liabilities | 0 | 0
Portion at Other than Fair Value Measurement | Level 2 |  |
Financial assets carried at other than fair value |  |
Card Member and Other loans, less reserves | 0 | 0
Financial liabilities carried at other than fair value |  |
Long-term debt | 49,000 | 48,000
Fair Values (Textuals) |  |
Long-term debt | 49,000 | 48,000
Portion at Other than Fair Value Measurement | Level 2 | Certificates of Deposit |  |
Financial liabilities carried at other than fair value |  |
Financial liabilities | 16,000 | 18,000
Portion at Other than Fair Value Measurement | Level 3 |  |
Financial assets carried at other than fair value |  |
Card Member and Other loans, less reserves | 134,000 | 133,000
Financial liabilities carried at other than fair value |  |
Long-term debt | 0 | 0
Fair Values (Textuals) |  |
Long-term debt | 0 | 0
Portion at Other than Fair Value Measurement | Level 3 | Certificates of Deposit |  |
Financial liabilities carried at other than fair value |  |
Financial liabilities | $ 0 | $ 0

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