Pension and Other Benefits (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Pension Benefits
Components of net periodic benefit cost [Line Items]
Service cost		$ 3.5	$ 4.5
Interest cost		10.5	10.1
Expected return on plan assets		(11.0)	(13.2)
Amortization of prior service cost		0.0	0.0
Amortization of actuarial losses/(gains)		3.5	2.9
NET PERIODIC BENEFIT COST		6.5	4.3
Other Benefits
Components of net periodic benefit cost [Line Items]
Service cost		0.0	0.0
Interest cost		0.3	0.3
Expected return on plan assets		0.0	0.0
Amortization of prior service cost		(0.2)	(0.2)
Amortization of actuarial losses/(gains)		0.0	0.0
NET PERIODIC BENEFIT COST		0.1	$ 0.1
Domestic Plan
Components of net periodic benefit cost [Line Items]
Contributions by employer	$ 20.0
Foreign Plan
Components of net periodic benefit cost [Line Items]
Defined benefit plan estimated total employer contributions in current fiscal year		1.8
Contributions by employer		$ 0.5