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Schedule II Valuation and Qualifying Accounts (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Income Tax Valuation Allowance
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| Reconciliation of beginning and ending balances of valuation and qualifying accounts | |||
| Balance Beginning of Period | $ 35.6 | $ 38.4 | $ 33.1 |
| Additions Charged to Costs and Expenses | 5.3 | ||
| Deductions | 14.3 | 2.8 | |
| Balance End of Period | 21.3 | 35.6 | 38.4 |
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Other Allowances
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| Reconciliation of beginning and ending balances of valuation and qualifying accounts | |||
| Balance Beginning of Period | 9.6 | 8.5 | 13.2 |
| Additions Charged to Costs and Expenses | 0.1 | 1.2 | |
| Deductions | 1.3 | 0.1 | 4.7 |
| Balance End of Period | $ 8.4 | $ 9.6 | $ 8.5 |