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Commitments and Contingencies (Environmental) (Details) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Accrual for Environmental Loss Contingencies Disclosure [Abstract] | ||
| Accrual for Environmental Loss Contingencies | $ 58 | $ 66 |
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Superfund Sites [Member]
|
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| Accrual for Environmental Loss Contingencies Disclosure [Abstract] | ||
| Accrual for site contingency | $ 3 | |
| Number of superfund sites | 9 |