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Contingencies (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2011
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| Contingencies [Abstract] | |
| Estimated environmental liability | $ 5.4 |
| X | ||||||||||
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- Definition
The aggregate amount disbursed during the reporting period to settle environmental loss contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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