Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Estimated future benefit payments 2012	$ 16.0
Estimated future benefit payments 2013	16.6
Estimated future benefit payments 2014	16.8
Estimated future benefit payments 2015	17.6
Estimated future benefit payments 2016	17.5
Estimated future benefit payments 2017 and thereafter	92.0
Net defined contribution plan expense recognized	9.3	8.6	8.4
Loss that will be amortized from accumulated other comprehensive income in the next year	(10.8)
Discount rate used to determine accumulated posretirement benefit obligation	3.50%	4.25%	4.75%
Discount rate used to determine net postretirement benefit expense	4.25%	4.75%	5.50%
Health care-cost trend rate used to determine accumulated postretirement benefit obligation	8.50%	8.50%	9.00%
Health-care cost trend, decrease in 2019 and thereafter	4.50%	4.50%	4.50%
One percentage point increase on accumulated postretirement benefit obligation	0.3
One percentage point increase on net postretirement benefit expense	0.1
One percentage point decrease on accumulated postretirement benefit obligation	0.3
One percentage point decrease on net postretirement benefit expense	0.1
Other Postretirement Benefit Plans, Defined Benefit [Member]
Estimated future benefit payments 2012	1.0
Estimated future benefit payments 2013	1.0
Estimated future benefit payments 2014	0.8
Estimated future benefit payments 2015	0.7
Estimated future benefit payments 2016	0.6
Estimated future benefit payments 2017 and thereafter	2.8
U.S. Plans [Member]
Accumulated benefit obligation	166.6	152.3
Defined benefit pension plan cash contributions	17.5	10.0
Asset allocation assumption to equity investments	65.00%
Equity investments, expected real rate of return	8.00%
Asset allocation assumption to fixed-income	35.00%
Fixed-income investments, expected real rate of return	2.00%
Long-term rate of inflation	3.00%
Equity investment, actual asset allocation	66.00%	68.00%
Actual fixed-income investments allocation	34.00%	32.00%
Discount rate used to determine accumulated posretirement benefit obligation	4.70%	5.50%
Discount rate used to determine net postretirement benefit expense	4.70%
Non-U.S. Plans [Member]
Accumulated benefit obligation	102.3	95.3
Defined benefit pension plan cash contributions	6.9	10.9
Asset allocation assumption to equity investments	35.00%	47.00%
Asset allocation assumption to fixed-income	63.00%	51.00%
Asset allocation assumption to other investments	2.00%	2.00%
Actual asset allocation of equity investment	35.00%
Actual asset allocation of fixed-investments	64.00%
Actual asset allocation of other investments	1.00%
Discount rate used to determine accumulated posretirement benefit obligation	5.20%	5.40%
Discount rate used to determine net postretirement benefit expense	5.20%
Two Mutual Funds [Member]
Plan assets concentration	29.00%	27.00%
Minimum [Member]
Estimated future benefit payments 2012	$ 9.0