Contingencies Enviromental liabilities rollforward (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Beginning Balance	$ 14.8
Adjusted to expense (income) during the year	0	5.0	11.5
Ending Balance	15.3	14.8
Reserve for Environmental Costs [Member]
Beginning Balance	14.1	15.0	14.3
Adjusted to expense (income) during the year	1.3	0.7	1.5
Payments made	0	(1.6)	(0.8)
Ending Balance	14.9	14.1	15.0
Formal cost share [Member]
Other Unrecorded Amounts	2.1
Indemnification Agreement [Member]
Other Unrecorded Amounts	2.7
Other Reserves [Member]
Other Unrecorded Amounts	$ 0.4

Amount of loss contingency liability.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

Amount of payments made reducing loss contingency liability.

+ References

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- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

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- Definition

Other unrecorded indebtedness which have not been separately stated.

+ References

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

-Publisher SEC

-Name Rule 15c3

-Number 240

-Section 3

-Subparagraph i

-Article 15c3

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