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Debt (Details 1) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Outstanding balance | $ 38,675 | $ 42,952
Unamortized Underwriting Fees | (52) |
Long-term Debt |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 38,675 | $ 42,952
Year-End Stated Rate on Debt (as a percent) | 2.22% | 2.49%
Unamortized Underwriting Fees | $ (52) | $ (64)
Parent Company |  |
Debt Instrument [Line Items] |  |
Outstanding balance | 22,314 | 22,810
Fixed Rate Senior Notes | Parent Company | Long-term Debt | American Express Company |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 18,324 | $ 18,251
Year-End Stated Rate on Debt (as a percent) | 3.02% | 3.25%
Year-End Interest Rate with Swaps (as a percent) | 2.03% | 2.09%
Fixed Rate Senior Notes | Subsidiaries | Long-term Debt | American Express Credit Corporation |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 2,078 | $ 6,746
Year-End Stated Rate on Debt (as a percent) | 2.80% | 2.38%
Year-End Interest Rate with Swaps (as a percent) | 1.32% | 1.67%
Fixed Rate Senior Notes | Subsidiaries | Long-term Debt | Lending Trust |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 8,199 | $ 8,325
Year-End Stated Rate on Debt (as a percent) | 2.01% | 2.74%
Year-End Interest Rate with Swaps (as a percent) | 1.82% | 2.55%
Floating Rate Senior Notes | Parent Company | Long-term Debt | American Express Company |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 3,300 | $ 4,000
Year-End Stated Rate on Debt (as a percent) | 0.69% | 0.84%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Senior Notes | Subsidiaries | Long-term Debt | American Express Credit Corporation |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 300 | $ 300
Year-End Stated Rate on Debt (as a percent) | 0.87% | 0.93%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Senior Notes | Subsidiaries | Long-term Debt | Lending Trust |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 3,325 | $ 4,125
Year-End Stated Rate on Debt (as a percent) | 0.49% | 0.51%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Fixed Rate Subordinated Notes | Parent Company | Long-term Debt | American Express Company |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 599 | $ 599
Year-End Stated Rate on Debt (as a percent) | 3.63% | 3.63%
Year-End Interest Rate with Swaps (as a percent) | 1.38% | 1.43%
Fixed Rate Subordinated Notes | Subsidiaries | Long-term Debt | Lending Trust |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 212 | $ 246
Year-End Stated Rate on Debt (as a percent) | 2.72% | 2.80%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Subordinated Notes | Subsidiaries | Long-term Debt | Lending Trust |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 79 | $ 79
Year-End Stated Rate on Debt (as a percent) | 0.68% | 0.73%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Subordinated Notes | Charge Trust |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 2,000 | $ 0
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Subordinated Notes | Charge Trust | Long-term Debt |  |
Debt Instrument [Line Items] |  |
Year-End Stated Rate on Debt (as a percent) | 0.40% | 0.00%
Fixed Rate Instruments | Subsidiaries | Financed Leases | Long-term Debt | Other Subsidiaries |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 14 | $ 17
Year-End Stated Rate on Debt (as a percent) | 5.49% | 5.54%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%
Floating Rate Borrowings | Subsidiaries | Long-term Debt | Other Subsidiaries |  |
Debt Instrument [Line Items] |  |
Outstanding balance | $ 297 | $ 328
Year-End Stated Rate on Debt (as a percent) | 0.42% | 0.42%
Year-End Interest Rate with Swaps (as a percent) | 0.00% | 0.00%

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