Pension (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits [Member]
Components of net periodic benefit cost [Line Items]
Service cost	$ 3.8	$ 4.8	$ 11.3	$ 12.8
Interest cost	10.3	9.2	30.7	27.4
Expected return on plan assets	(11.4)	(11.8)	(34.0)	(35.1)
Amortization of prior service cost	0	0	0.1	0.1
Amortization of actuarial losses/(gains)	1.1	3.3	2.9	10.4
Net periodic benefit cost	3.8	5.5	11.0	15.6
Other Benefits [Member]
Components of net periodic benefit cost [Line Items]
Service cost	0	0	0	0
Interest cost	0.3	0.3	0.9	0.9
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	(0.3)	(0.2)	(0.7)	(0.7)
Amortization of actuarial losses/(gains)	0	(0.1)	(0.1)	(0.1)
Net periodic benefit cost	0	0	0.1	0.1
Foreign Plan [Member]
Components of net periodic benefit cost [Line Items]
Contribution to defined benefit pension plans			3.0
Defined Benefit Plan Estimated Total Employer Contributions In Current Fiscal Year			3.8
Domestic Plan [Member]
Components of net periodic benefit cost [Line Items]
Contribution to defined benefit pension plans			$ 0