Income Taxes Interest and Penalties (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Total accrued interest	$ 4.9	$ 4.1
Total accrued penalties	0.5	0.5
Other Current Liabilities [Member]
Income Tax Contingency [Line Items]
Accrued interest	0.1	0.1
Accrued penalties	0	0
Other Noncurrent Liabilities [Member]
Income Tax Contingency [Line Items]
Accrued interest	4.8	4.0
Accrued penalties	$ 0.5	$ 0.5

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The amount of estimated interest accrued as of the balance sheet date arising from income tax examinations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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- Definition

The amount of estimated penalties accrued as of the balance sheet date arising from income tax examinations.

+ References

+ Details

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- Definition

Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

+ References

+ Details

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- Definition

Amount of interest expense accrued for an underpayment of income taxes.

+ References

+ Details

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