Retirement Plans (Details) In Millions, unless otherwise specified	1 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Apr. 30, 2013 USD ($)	Apr. 30, 2013 EUR (€)	Jun. 30, 2013 USD ($)	Jun. 30, 2013 Defined Benefit Pension Plans [Member] USD ($)	Jun. 30, 2012 Defined Benefit Pension Plans [Member] USD ($)	Jun. 30, 2013 Defined Benefit Pension Plans [Member] USD ($)	Jun. 30, 2012 Defined Benefit Pension Plans [Member] USD ($)	Jun. 30, 2013 Retiree Health Care Plan [Member] USD ($)	Jun. 30, 2012 Retiree Health Care Plan [Member] USD ($)	Jun. 30, 2013 Retiree Health Care Plan [Member] USD ($)	Jun. 30, 2012 Retiree Health Care Plan [Member] USD ($)
Defined Benefit Plan Disclosure [Line Items]
Service cost				$ 2.2	$ 2.6	$ 4.4	$ 5.2
Interest cost				3.0	3.8	6.1	7.5	0.3	0.4	0.6	0.7
Expected return on assets				(2.8)	(3.7)	(5.6)	(7.3)
Curtailment gain	2.3	1.8		(2.3)	0	(2.3)	0
Other				1.0	0.4	1.9	0.8
Net loss								0.1	0	0.2	0
Total benefit cost				1.1	3.1	4.5	6.2	0.4	0.4	0.8	0.7
Contributions to pension plans				3.9		7.9
Contributions to retiree health care plan								0.5		1.0
Estimated employer contribution to pension plans during current fiscal year			$ 18.0