Net Periodic Cost (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Domestic Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	$ 0	$ 0	$ 0
Interest Cost	6.8	7.3	8.0
Expected return on plan assets	(7.5)	(7.0)	(7.4)
Curtailments and settlement losses	0	0	0
Amortization of:
Transition obligations	0	0	0
Prior service cost (credit)	0	0	0.1
Unrecognized actuarial losses	6.6	8.6	9.8
Defined Benefit Plan, Net Periodic Benefit Cost	5.9	8.9	10.5
Net Periodic Benefit, Discount Rate	5.50%	5.51%	6.01%
Expected Long-term Return on Assets	7.50%	7.49%	8.16%
Benefit Obligation, Discount Rate	5.00%	5.50%	5.53%
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	9.6	9.7	11.7
Interest Cost	23.3	22.8	23.2
Expected return on plan assets	(19.0)	(17.0)	(13.7)
Curtailments and settlement losses	0	1.4	2.5
Amortization of:
Transition obligations	0	0	0
Prior service cost (credit)	0.2	0.2	0.2
Unrecognized actuarial losses	0.7	1.9	2.3
Defined Benefit Plan, Net Periodic Benefit Cost	14.8	19.0	26.2
Net Periodic Benefit, Discount Rate	5.45%	5.50%	5.54%
Net Periodic Benefit, Rate of Compensation Increase	4.37%	4.43%	4.41%
Expected Long-term Return on Assets	5.88%	5.84%	5.05%
Benefit Obligation, Discount Rate	5.00%	5.45%	5.51%
Benefit Obligation, Rate of Compensation Increase	3.66%	4.34%	4.43%
Domestic Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	0.2	0.3	0.4
Interest Cost	2.7	2.8	3.1
Expected return on plan assets	0	0	0
Curtailments and settlement losses	0	0	0
Amortization of:
Transition obligations	0.1	0.2	0.1
Prior service cost (credit)	(0.1)	(0.1)	(0.1)
Unrecognized actuarial losses	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost	$ 2.9	$ 3.2	$ 3.5
Net Periodic Benefit, Discount Rate	5.50%	5.50%	6.00%
Benefit Obligation, Discount Rate	5.00%	5.50%	5.50%
Health Care Cost Trend Rate Assumed for Next Year	8.00%	8.50%	8.00%
Year Ultimate Trend Rate is Reached	2016	2017	2015
Ultimate Health Care Cost Trend Rate	5.50%	5.50%	5.50%