|
Receivables - Schedule of Receivables (Details) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Receivables [Abstract] | ||
| Billed receivables | $ 37 | $ 69 |
| Unbilled contract receivables | 151 | 159 |
| Total | $ 188 | $ 228 |