Acquisitions and Divestitures Textual ( Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2016 |
|
Business Events Textuals [Abstract] | ||||
Gain on sale of HFS Portfolios | $ (1,218) | |||
Other Expense [Member] | Goodwill Impairment Charges [Domain] | ||||
Business Events Textuals [Abstract] | ||||
Goodwill And Intangible Asset Impairment | $ 384 | |||
Other Expense [Member] | ||||
Business Events Textuals [Abstract] | ||||
Goodwill And Intangible Asset Impairment | 219 | |||
Other Expense [Member] | Write-down of technology and other assets to fair value [Member] | ||||
Business Events Textuals [Abstract] | ||||
Goodwill And Intangible Asset Impairment | $ 165 | |||
Costco [Member] | Other Expense [Member] | ||||
Business Events Textuals [Abstract] | ||||
Gain on sale of HFS Portfolios | $ (1,091) | |||
JetBlue [Member] | Other Expense [Member] | ||||
Business Events Textuals [Abstract] | ||||
Gain on sale of HFS Portfolios | $ (127) |