Asset Securitizations (Details Textuals) $ in Billions |
Dec. 31, 2016
USD ($)
|
|---|---|
| American Express Travel Related Services Company Inc [Member] | |
| Securitized Trusts [Line Items] | |
| Subordinated securities owned | $ 0.0 |
| American Express Charge Trust [Member] | |
| Securitized Trusts [Line Items] | |
| Direct and Indirect Ownership of Variable Interests | 4.5 |
| American Express Lending Trust [Member] | |
| Securitized Trusts [Line Items] | |
| Direct and Indirect Ownership of Variable Interests | $ 15.1 |