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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |  |
Income Tax Expense (Benefit), Discrete Item | $ 2.2 | $ 2.0 | $ 9.8 | $ 5.4

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- Definition Income Tax Expense (Benefit), Discrete Item + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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