Employee Benefits (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Domestic Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	1.7	1.9	5.1	5.5
Expected return on plan assets	(1.9)	(1.8)	(5.6)	(5.2)
Settlement losses	0	0	0	0
Amortization of:
Transition obligation	0	0	0	0
Prior service cost	0	0	0	0
Unrecognized actuarial losses	1.7	2.1	5.0	6.5
Net periodic cost	1.5	2.2	4.5	6.8
Defined benefit plan, Contributions made by employer			13.3
Defined benefit plan, Estimated future employer contributions in current fiscal year	0.8		0.8
Foreign Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	2.8	3.2	7.9	8.8
Interest cost	5.9	5.7	17.6	17.3
Expected return on plan assets	(4.8)	(4.3)	(14.3)	(12.8)
Settlement losses	0	0	0	1.0
Amortization of:
Transition obligation	0	0	0	0
Prior service cost	0	0.1	0.1	0.2
Unrecognized actuarial losses	0.3	0.5	0.6	1.4
Net periodic cost	4.2	5.2	11.9	15.9
Defined benefit plan, Contributions made by employer			17.6
Defined benefit plan, Estimated future employer contributions in current fiscal year	6.4		6.4
Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	0.1	0.1	0.2	0.2
Interest cost	0.7	0.7	2.0	2.1
Expected return on plan assets	0	0	0	0
Settlement losses	0	0	0	0
Amortization of:
Transition obligation	0	0	0.1	0.1
Prior service cost	(0.1)	0	(0.1)	0
Unrecognized actuarial losses	0	0	0	0
Net periodic cost	$ 0.7	$ 0.8	$ 2.2	$ 2.4