Pension and Postretirement Benefit Obligation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period End)	$ 497.4	$ 470.8
Domestic Pension Plan
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	129.0	130.9
Service cost	0	0	0
Interest cost	6.3	6.8	7.3
Benefits paid	(10.8)	(11.9)
Plan participant contributions	0	0
Actuarial losses (gains)	16.1	3.2
Settlements and curtailments	0	0
Foreign currency effect	0	0
Other	0	0
Benefit Obligation (Period End)	140.6	129.0	130.9
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	107.2	95.3
Actual return on plan assets	13.7	9.7
Employer contributions	5.6	14.1
Plan participant contributions	0	0
Benefits paid	(10.8)	(11.9)
Settlements	0	0
Foreign currency effect	0	0
Fair Value of Plan Assets (Period End)	115.7	107.2	95.3
Defined Benefit Plan, Funded Status of Plan	(24.9)	(21.8)
Amounts Recognized in Consolidated Balance Sheets
Non-current asset	0	0
Current liability	0	0
Non-current liability	(24.9)	(21.8)
Net liability recognized	(24.9)	(21.8)
Accumulated benefit obligation	140.6	129.0
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net actuarial loss	53.6	49.9
Prior service cost (credit)	0	0
Transition obligation	0	0
Total amount recognized	53.6	49.9
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year	8.3
Pension plans with underfunded or unfunded accumulated benefit obligation
Aggregate projected benefit obligation	140.6	129.0
Aggregate accumulated benefit obligation	140.6	129.0
Aggregate fair value of plan assets	115.7	107.2
Foreign Pension Plans
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	456.6	431.1
Service cost	10.2	9.6	9.7
Interest cost	21.9	23.3	22.8
Benefits paid	(20.4)	(21.2)
Plan participant contributions	0.6	0.7
Actuarial losses (gains)	60.0	13.5
Settlements and curtailments	(6.5)	(5.8)
Foreign currency effect	8.9	4.9
Other	1.1	0.5
Benefit Obligation (Period End)	532.4	456.6	431.1
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	363.6	312.1
Actual return on plan assets	17.6	9.0
Employer contributions	17.7	65.0
Plan participant contributions	0.6	0.7
Benefits paid	(20.4)	(21.2)
Settlements	(6.1)	(5.8)
Foreign currency effect	8.7	3.8
Fair Value of Plan Assets (Period End)	381.7	363.6	312.1
Defined Benefit Plan, Funded Status of Plan	(150.7)	(93.0)
Amounts Recognized in Consolidated Balance Sheets
Non-current asset	7.4	19.6
Current liability	(8.4)	(8.1)
Non-current liability	(149.7)	(104.5)
Net liability recognized	(150.7)	(93.0)
Accumulated benefit obligation	508.5	432.8
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net actuarial loss	115.7	55.2
Prior service cost (credit)	1.8	1.9
Transition obligation	0	0
Total amount recognized	117.5	57.1
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year	2.9
Pension plans with underfunded or unfunded accumulated benefit obligation
Aggregate projected benefit obligation	515.8	132.6
Aggregate accumulated benefit obligation	497.3	127.0
Aggregate fair value of plan assets	358.5	20.2
Domestic Postretirement Benefit Plan
Benefit Obligation [Roll Forward]
Benefit Obligation (Period Start)	50.8	51.8
Service cost	0.2	0.2	0.3
Interest cost	2.3	2.7	2.8
Benefits paid	(5.9)	(6.2)
Plan participant contributions	1.7	1.4
Actuarial losses (gains)	(2.5)	0.9
Settlements and curtailments	0	0
Foreign currency effect	0	0
Other	0	0
Benefit Obligation (Period End)	46.6	50.8	51.8
Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets (Period Start)	0	0
Actual return on plan assets	0	0
Employer contributions	4.2	4.8
Plan participant contributions	1.7	1.4
Benefits paid	(5.9)	(6.2)
Settlements	0	0
Foreign currency effect	0	0
Fair Value of Plan Assets (Period End)	0	0	0
Defined Benefit Plan, Funded Status of Plan	(46.6)	(50.8)
Amounts Recognized in Consolidated Balance Sheets
Non-current asset	0	0
Current liability	(4.6)	(4.9)
Non-current liability	(42.0)	(45.9)
Net liability recognized	(46.6)	(50.8)
Amounts recognized in Accumulated Other Comprehensive Loss, net
Net actuarial loss	4.2	6.7
Prior service cost (credit)	(0.2)	(0.3)
Transition obligation	0	0.1
Total amount recognized	$ 4.0	$ 6.5