Retirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2012 United States Pension Plans of US Entity, Defined Benefit [Member]	Jun. 30, 2011 United States Pension Plans of US Entity, Defined Benefit [Member]	Jun. 30, 2012 United States Pension Plans of US Entity, Defined Benefit [Member]	Jun. 30, 2011 United States Pension Plans of US Entity, Defined Benefit [Member]	Jun. 30, 2012 Foreign Pension Plans, Defined Benefit [Member]	Jun. 30, 2011 Foreign Pension Plans, Defined Benefit [Member]	Jun. 30, 2012 Foreign Pension Plans, Defined Benefit [Member]	Jun. 30, 2011 Foreign Pension Plans, Defined Benefit [Member]	Jun. 30, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 30, 2011 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 30, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 30, 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	9.1
Settlement Agreement For Cash Contribution To Plan		15
Components of net periodic benefit cost:
Service cost			0	0	0	0	2.3	2.7	4.6	5.2	0.2	0.1	0.3	0.3
Interest cost			3.6	4.1	7.2	8.1	4.3	4.4	8.7	9.0	2.5	3.0	5.1	5.9
Expected return on plan assets			(4.7)	(5.2)	(9.4)	(10.4)	(2.3)	(2.9)	(4.6)	(5.7)	0	0	0	0
Amortization of unrecognized prior service benefit			(0.2)	(0.3)	(0.4)	(0.4)	0	0	0	0	(1.6)	(1.7)	(3.2)	(3.4)
Amortization of unrecognized loss			2.1	1.6	4.1	3.2	0.2	0.2	0.5	0.4	1.7	2.0	3.4	4.0
Net periodic benefit cost			$ 0.8	$ 0.2	$ 1.5	$ 0.5	$ 4.5	$ 4.4	$ 9.2	$ 8.9	$ 2.8	$ 3.4	$ 5.6	$ 6.8