Commitments and Contingencies Asbestos Claimant and Settlement (Details) - Asbestos [Member]	3 Months Ended	9 Months Ended
	Mar. 31, 2021 USD ($) claimants	Sep. 30, 2019 USD ($) claimants	Dec. 31, 2020 claimants	Dec. 31, 2019 claimants
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	4,676		4,655	4,759
Loss Contingency, New Claims Filed, Number	62	219
Loss Contingency, Claims Dismissed, Number	35	287
Loss Contingency, Claims Settled, Number	6	36
Average settlement amount per claim during period | $	$ 37,917	$ 18,314
Legal Fees | $	$ 530,000	$ 2,130,000