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Commitments and Contingencies Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract] |
Environmental accrual rollforward table | The following table presents the changes in such accruals, which are primarily included in Long-term liabilities.
|  | Year Ended December 31,
|  | 2011 |  | 2010 |  | 2009
Beginning balance |  | $ | 20.2 |  |  | $ | 9.7 |  |  | $ | 9.6 |
Additional accruals |  | 3.9 |  |  | 13.9 |  |  | 2.4 |
Less expenditures |  | (2.1 | ) |  | (3.4 | ) |  | (2.3 | )
Ending balance |  | $ | 22.0 |  |  | $ | 20.2 |  |  | $ | 9.7 |

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- Definition Environmental accrual rollforward [Table Text Block] + References No definition available. + Details
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