Pension Cash Flows (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Expected Federal Subsidy Receipts [Abstract]
Prescription Drug Subsidy Receipts in 2012	$ 0.5
Prescription Drug Subsidy Receipts in 2013	0.6
Prescription Drug Subsidy Receipts in 2014	0.6
Prescription Drug Subsidy Receipts in 2015	0.5
Prescription Drug Subsidy Receipts in 2016	0.5
Prescription Drug Subsidy Receipts in 2017-2021	1.4
Domestic Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions by Employer	14.1	9.6
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	5.6
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Expected Future Benefit Payments in 2012	11.0
Expected Future Benefit Payments in 2013	10.9
Expected Future Benefit Payments in 2014	10.6
Expected Future Benefit Payments in 2015	9.9
Expected Future Benefit Payments in 2016	10.3
Expected Future Benefit Payments in 2017-2021	44.4
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions by Employer	65.0	28.1
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	15.7
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Expected Future Benefit Payments in 2012	21.8
Expected Future Benefit Payments in 2013	24.2
Expected Future Benefit Payments in 2014	24.8
Expected Future Benefit Payments in 2015	25.8
Expected Future Benefit Payments in 2016	26.7
Expected Future Benefit Payments in 2017-2021	153.7
Domestic Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions by Employer	4.8	5.5
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Expected Future Benefit Payments in 2012	5.4
Expected Future Benefit Payments in 2013	5.4
Expected Future Benefit Payments in 2014	5.3
Expected Future Benefit Payments in 2015	5.1
Expected Future Benefit Payments in 2016	5.0
Expected Future Benefit Payments in 2017-2021	$ 21.7