Pension Cash Flows (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Domestic Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Employer contributions	$ 5.6	$ 14.1
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	1.0
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity
Expected Future Benefit Payments in 2013	10.1
Expected Future Benefit Payments in 2014	9.8
Expected Future Benefit Payments in 2015	9.6
Expected Future Benefit Payments in 2016	9.3
Expected Future Benefit Payments in 2017	9.1
Expected Future Benefit Payments in 2018-2022	42.8
Foreign Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Employer contributions	17.7	65.0
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	19.0
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity
Expected Future Benefit Payments in 2013	22.0
Expected Future Benefit Payments in 2014	23.0
Expected Future Benefit Payments in 2015	23.2
Expected Future Benefit Payments in 2016	26.0
Expected Future Benefit Payments in 2017	25.9
Expected Future Benefit Payments in 2018-2022	143.5
Domestic Postretirement Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Employer contributions	4.2	4.8
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity
Expected Future Benefit Payments in 2013	5.0
Expected Future Benefit Payments in 2014	4.8
Expected Future Benefit Payments in 2015	4.7
Expected Future Benefit Payments in 2016	4.4
Expected Future Benefit Payments in 2017	4.2
Expected Future Benefit Payments in 2018-2022	17.5
Disclosure of Expected Federal Subsidy Receipts
Prescription Drug Subsidy Receipts in 2013	0.4
Prescription Drug Subsidy Receipts in 2014	0.5
Prescription Drug Subsidy Receipts in 2015	0.5
Prescription Drug Subsidy Receipts in 2016	0.5
Prescription Drug Subsidy Receipts in 2017	0.5
Prescription Drug Subsidy Receipts in 2018-2022	$ 0.9

The increase in the fair value of plan assets from contributions made by the employer.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

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

-Publisher FASB

-Name Accounting Standards Codification

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