Financial Instruments Schedule of Gains and Losses of Derivative Financial Instruments Not Designated as Hedges (Details) - Other Income [Member] - Nondesignated [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ (1.7)	$ (6.0)	$ (5.9)	$ (29.1)
Derivative, Gain (Loss) on Derivative, Net	$ (1.7)	$ (6.0)	$ (5.9)	$ (29.1)