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Basis of Presentation Recently Adopted Accounting Standards (Details) - USD ($) $ in Millions | Jan. 01, 2016 | Dec. 31, 2015
--- | --- | ---
Other Noncurrent Assets |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |
Long-term deferred tax assets | $ 10.8 | $ 6.7
Deferred Income Tax and Other Long-term Liabilities |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |
Long-term deferred tax liabilities | 4.4 | $ 16.5
New Accounting Pronouncement, Early Adoption, Effect |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |
Decrease in current deferred tax assets | 4.1 |
Decrease in current deferred tax liabilities | $ 12.1 |

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