Restructuring (Narrative) (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) employee	Dec. 31, 2018 employee	Dec. 31, 2017 employee
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	$ (1.2)	$ 2.9
2017 Repositioning
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	(1.5)
Restructuring and related cost, expected number of positions eliminated | employee					300
Restructuring and related cost, number of positions eliminated, period percent					3.00%
Severance costs	0.0
Other restructuring costs	(1.5)
Other costs related to repositioning actions	1.3	$ 2.1
Restructuring and related cost, expected cost remaining	0.9
2017 Repositioning | Cumulative
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	30.5
Severance costs	31.2
Other restructuring costs	(0.7)
Acquisition-Related Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected number of positions eliminated | employee				170
Acquisition-Related Restructuring | Facility Closing
Restructuring Cost and Reserve [Line Items]
Other costs related to repositioning actions			$ 0.6
2017 Repositioning Program
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of positions eliminated, period percent				2.00%
Fluid Handling [Member] | 2019 Repositioning Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net			$ 9.9
Restructuring and related cost, expected number of positions eliminated | employee			180
Restructuring and related cost, number of positions eliminated, period percent			1.00%
Fluid Handling [Member] | 2017 Repositioning
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	0.0
Severance costs	0.0
Other restructuring costs	0.0
Fluid Handling [Member] | 2017 Repositioning | Cumulative
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	17.3
Severance costs	17.3
Other restructuring costs	0.0
Payment and Merchandising Technologies [Member] | 2017 Repositioning
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	(1.5)
Severance costs	0.0
Other restructuring costs	(1.5)
Payment and Merchandising Technologies [Member] | 2017 Repositioning | Cumulative
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net	13.3
Severance costs	12.6
Other restructuring costs	0.7
Payment and Merchandising Technologies [Member] | Acquisition-Related Restructuring | Cumulative
Restructuring Cost and Reserve [Line Items]
Restructuring (gain) charges, net			$ 6.9
Severance costs			3.3
Other restructuring costs			$ 3.6
ExpectedRestructuringCostsin2020[Member] [Member] | Fluid Handling [Member] | 2019 Repositioning Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	4.8
ExpectedRestructuringin2021 [Member] | Fluid Handling [Member] | 2019 Repositioning Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	$ 4.2