Commitments and Contingencies Asbestos Damages Sought (Details) - Asbestos [Member] $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($) claimants	Sep. 30, 2019 USD ($) claimants
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 0.0
Compensatory and Punitive Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.6
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.6
Compensatory and Punitive Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		5.0
Compensatory and Punitive Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		5.0
Compensatory Only Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.0
Compensatory Only Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.6
Compensatory Only Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		5.0
Compensatory Only Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		5.0
Punitive Only Damages [Member] | Range 1 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		0.0
Punitive Only Damages [Member] | Range 1 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		2.5
Punitive Only Damages [Member] | Range 2 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		2.5
Punitive Only Damages [Member] | Range 2 [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		5.0
Punitive Only Damages [Member] | Range 3 [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 5.0
Pending Litigation [Member] | Compensatory Only Damages [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages | claimants	60	60
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages | claimants	0	0
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages | claimants	9	9
Pending Litigation [Member] | Compensatory Only Damages [Member] | Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages | claimants	51	51
Pending Litigation [Member] | Punitive Only Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 5.0
Number of pending claims seeking specific amounts of damages | claimants	1	1