Retirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended
	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2012 United States Pension Plans of US Entity, Defined Benefit [Member]	Mar. 31, 2011 United States Pension Plans of US Entity, Defined Benefit [Member]	Mar. 31, 2012 Foreign Pension Plans, Defined Benefit [Member]	Mar. 31, 2011 Foreign Pension Plans, Defined Benefit [Member]	Mar. 31, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Mar. 31, 2011 Other Postretirement Benefit Plans, Defined Benefit [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year									$ 30	$ 40
Actual contribution to defined benefit pension plans	4.7
Settlement Agreement For Cash Contribution To Plan		15
Components of net periodic benefit cost:
Service cost			0	0	2.3	2.5	0.1	0.2
Interest cost			3.6	4.0	4.4	4.6	2.6	2.9
Expected return on plan assets			(4.7)	(5.2)	(2.3)	(2.8)	0	0
Amortization of unrecognized prior service benefit			(0.2)	(0.1)	0	0	(1.6)	(1.7)
Amortization of unrecognized loss			2.0	1.6	0.3	0.2	1.7	2.0
Net periodic benefit cost			$ 0.7	$ 0.3	$ 4.7	$ 4.5	$ 2.8	$ 3.4