Financial Instruments Schedule of the Fair Values of Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedges, asset at fair value	$ 0.3	$ 0.3
Derivatives designated as hedges, liability at fair value	1.8	3.2
Nondesignated [Member]
Derivatives, Fair Value [Line Items]
Derivatives not designated as hedges, asset at fair value	30.5	1.3
Derivatives not designated as hedges, liability at fair value	9.0	$ 10.1
Significant Other Observable Inputs (Level 2) [Member] | Recurring fair value measurements [Member]
Derivatives, Fair Value [Line Items]
Derivative asset fair value	30.8
Derivative liability fair value	$ 10.8