|
Financial Instruments (Fair Value of Derivative Instruments) (Details) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Notes to Condensed Consolidated Financial Statements [Abstract] | ||
| Derivatives designated as hedging instruments, Asset Derivatives | $ 13 | $ 59 |
| Derivatives not designated as hedging instruments, Asset Derivatives | 87 | 31 |
| Derivatives designated as hedging instruments, Liability Derivatives | 128 | 103 |
| Derivatives not designated as hedging instruments, Liability Derivatives | $ 89 | $ 54 |