Income Taxes (Unrecognized Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits at January 1	$ 27.6us-gaap_UnrecognizedTaxBenefits	$ 29.7us-gaap_UnrecognizedTaxBenefits
Increases related to: tax positions taken during a prior period	11.6	1.3
Increases related to: tax positions taken during the current period	0.5	0.9
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	5.6	0
Decreases related to: lapse of applicable statute of limitations	(9.9)	(1.2)
Decreases related to: settlements with taxing authorities	(1.1)	(3.1)
Unrecognized tax benefits at December 31	$ 23.1us-gaap_UnrecognizedTaxBenefits	$ 27.6us-gaap_UnrecognizedTaxBenefits

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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