|
Implementation of New Financial Accounting Pronouncements (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2011
|
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| Implementation of New Financial Accounting Pronouncements[Abstract] | |
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 178.0 |