| **Commitments and Contingencies Additional information (Details) (USD $)In Millions, unless otherwise specified** | Mar. 31, 2014 | Dec. 31, 2013 |
|-------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Commitments and Contingencies Disclosure [Abstract]**                                                           |          |          |
| Estimated Litigation Liability, Current                                                                           | $ 3.3         |          |
| Accrued Environmental Liabilities                                                                                 | $ 3.2         | $ 5.4         |

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| - Definition
Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.
+ References
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| - Definition
Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.
+ References
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