Financial Instruments Schedule of the Fair Values of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative asset fair value	$ 1.4	$ 2.2
Derivative liability fair value	3.2	1.3
Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Fair Value [Line Items]
Derivative asset fair value	1.4	2.2
Derivative liability fair value	3.2	1.3
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative asset fair value	1.1	1.3
Derivative liability fair value	2.5	0.7
Foreign Exchange Contract [Member] | Nondesignated [Member]
Derivatives, Fair Value [Line Items]
Derivative asset fair value	0.3	0.9
Derivative liability fair value	$ 0.7	$ 0.6