Business Events (Details Textuals) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2016 |
Mar. 31, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Business Events (Details) [Abstract] | |||||
| CardMember loans transferred from HFS to held for investment | $ 245 | ||||
| CardMember receivables transferred from Held for Sales (HFS) to held for investment | 1 | ||||
| Business Events (Line Items) | |||||
| Gain on sale of held for sale (HFS) portfolio | 1,091 | $ 0 | $ 1,218 | $ 0 | |
| Other Expense [Member] | |||||
| Business Events (Line Items) | |||||
| Gain on sale of held for sale (HFS) portfolio | $ 1,091 | $ 127 | |||