Commitments and Contingencies Asbestos Claimant and Settlement (Details) - Asbestos [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($) claimants	Dec. 31, 2018 USD ($) claimants	Dec. 31, 2019 claimants
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	4,719	4,820	4,759
Loss Contingency, New Claims Filed, Number	54	143
Loss Contingency, Claims Dismissed, Number	89	172
Loss Contingency, Claims Settled, Number	5	32
Average settlement amount per claim during period | $	$ 56,000	$ 16,616
Total defense costs during period | $	$ 650,000	$ 2,250,000