Pension (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Components of net periodic benefit cost [Line Items]
Service cost	$ 3.8	$ 4.0	$ 7.5	$ 8.0
Interest cost	10.2	9.1	20.4	18.2
Expected return on plan assets	(11.3)	(11.6)	(22.6)	(23.3)
Amortization of prior service cost	0	0.1	0.1	0.1
Amortization of actuarial losses/(gains)	0.9	3.5	1.8	7.1
Net periodic benefit cost	3.6	5.1	7.2	10.1
Other Benefits [Member]
Components of net periodic benefit cost [Line Items]
Service cost	0	0	0	0
Interest cost	0.4	0.4	0.6	0.6
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	(0.2)	(0.3)	(0.4)	(0.5)
Amortization of actuarial losses/(gains)	(0.1)	0	(0.1)	0
Net periodic benefit cost	0.1	0.1	0.1	0.1
Foreign Plan [Member]
Components of net periodic benefit cost [Line Items]
Contribution to defined benefit pension plans			2.8
Defined Benefit Plan Estimated Total Employer Contributions In Current Fiscal Year			4.9
Domestic Plan [Member]
Components of net periodic benefit cost [Line Items]
Contribution to defined benefit pension plans			$ 0