Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurements (Textual) [Abstract]
Derivative Credit Risk Valuation Adjustment, Derivative Assets	$ 0.0	$ 0.0
Derivative Credit Risk Valuation Adjustment, Derivative Liabilities	$ 0.0	0.0
Reviews for goodwill impairment annually on	Oct. 01, 2019
FHC Impairment charge	$ 37.0	$ 0.0	$ 207.3
Fluid Holding Corp
Fair Value Measurements (Textual) [Abstract]
FHC Impairment charge	$ 25.4