|
Consolidated Statements of Cash Flows (Parenthetical) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Increase decrease in debt exchange [Line Items] | |||
| Gain on business travel joint venture transaction | $ 630,000,000 | ||
| Sale of premises and equipment | 3,000,000 | 72,000,000 | 3,000,000 |
| Non Cash [Member] | |||
| Increase decrease in debt exchange [Line Items] | |||
| Charge related to impacts of debt exchange on long-term debt | 0 | 0 | 439,000,000 |
| Gain on business travel joint venture transaction | $ 630,000,000 | $ 0 | $ 0 |