Pension and Postretirement Benefit Obligation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period End)	$ 470.8	$ 407.4
Domestic Pension Plans, Defined Benefit [Member]
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	130.9	139.6
Service Cost	0	0	0
Interest Cost	6.8	7.3	8.0
Benefits Paid	(11.9)	(16.6)
Contributions by Plan Participants	0	0
Actuarial Net Losses (Gains)	3.2	0.6
Curtailments and settlements	0	0
Foreign Currency Effect	0	0
Benefit Obligation, Other	0	0
Benefit Obligation (Period End)	129.0	130.9	139.6
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	95.3	91.1
Actual Return on Plan Assets	9.7	11.2
Contributions by Employer	14.1	9.6
Contributions by Plan Participants	0	0
Benefits Paid	(11.9)	(16.6)
Settlements	0	0
Foreign Currency Effect	0	0
Fair Value of Plan Assets, Other	0	0
Fair Value of Plan Assets (Period End)	107.2	95.3	91.1
Defined Benefit Plan, Funded Status of Plan	(21.8)	(35.6)
Amounts Recognized in Consolidated Balance Sheets
Non-current Asset	0	0
Current Liability	0	0
Non-current Liability	(21.8)	(35.6)
Net Liability Recognized	(21.8)	(35.6)
Accumulated Benefit Obligation	129.0	130.9
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net Actuarial Loss	49.9	55.5
Prior Service Cost (Credit)	0	0.1
Transition Obligations	0	0
Total amount recognized	49.9	55.6
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	6.1
Pension plans with underfunded or unfunded accumulated benefit obligation
Aggregate projected benefit obligation	129.0	130.9
Aggregate accumulated benefit obligation	129.0	130.9
Aggregate fair value of plan assets	107.2	95.3
Foreign Pension Plans, Defined Benefit [Member]
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	431.1	464.0
Service Cost	9.6	9.7	11.7
Interest Cost	23.3	22.8	23.2
Benefits Paid	(21.2)	(21.1)
Contributions by Plan Participants	0.7	0.7
Actuarial Net Losses (Gains)	13.5	(2.3)
Curtailments and settlements	(5.8)	(12.2)
Foreign Currency Effect	4.9	(15.1)
Benefit Obligation, Other	0.5	(15.4)
Benefit Obligation (Period End)	456.6	431.1	464.0
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	312.1	300.2
Actual Return on Plan Assets	9.0	28.3
Contributions by Employer	65.0	28.1
Contributions by Plan Participants	0.7	0.7
Benefits Paid	(21.2)	(21.1)
Settlements	(5.8)	(12.2)
Foreign Currency Effect	3.8	(7.4)
Fair Value of Plan Assets, Other	0	(4.5)
Fair Value of Plan Assets (Period End)	363.6	312.1	300.2
Defined Benefit Plan, Funded Status of Plan	(93.0)	(119.0)
Amounts Recognized in Consolidated Balance Sheets
Non-current Asset	19.6	8.1
Current Liability	(8.1)	(9.3)
Non-current Liability	(104.5)	(117.8)
Net Liability Recognized	(93.0)	(119.0)
Accumulated Benefit Obligation	432.8	408.8
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net Actuarial Loss	55.2	32.3
Prior Service Cost (Credit)	1.9	1.6
Transition Obligations	0	0
Total amount recognized	57.1	33.9
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	1.0
Pension plans with underfunded or unfunded accumulated benefit obligation
Aggregate projected benefit obligation	132.6	411.5
Aggregate accumulated benefit obligation	127.0	394.4
Aggregate fair value of plan assets	20.2	285.7
Domestic Postretirement Benefit Plans, Defined Benefit [Member]
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	51.8	55.1
Service Cost	0.2	0.3	0.4
Interest Cost	2.7	2.8	3.1
Benefits Paid	(6.2)	(7.0)
Contributions by Plan Participants	1.4	1.5
Actuarial Net Losses (Gains)	0.9	(0.9)
Curtailments and settlements	0	0
Foreign Currency Effect	0	0
Benefit Obligation, Other	0	0
Benefit Obligation (Period End)	50.8	51.8	55.1
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	0	0
Actual Return on Plan Assets	0	0
Contributions by Employer	4.8	5.5
Contributions by Plan Participants	1.4	1.5
Benefits Paid	(6.2)	(7.0)
Settlements	0	0
Foreign Currency Effect	0	0
Fair Value of Plan Assets, Other	0	0
Fair Value of Plan Assets (Period End)	0	0	0
Defined Benefit Plan, Funded Status of Plan	(50.8)	(51.8)
Amounts Recognized in Consolidated Balance Sheets
Non-current Asset	0	0
Current Liability	(4.9)	(4.5)
Non-current Liability	(45.9)	(47.3)
Net Liability Recognized	(50.8)	(51.8)
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net Actuarial Loss	6.7	5.7
Prior Service Cost (Credit)	(0.3)	(0.4)
Transition Obligations	0.1	0.3
Total amount recognized	6.5	5.6
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 0.2