Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) party
Loss Contingencies [Line Items]
Site Contingency, Names of Other Potentially Responsible Parties | party	100
Litigation Settlement, Expense	$ 115.0
Loss Contingency, Estimate of Possible Loss	1,700.0
Loss Contingency, Damages Sought, Value	1,200.0
Loss Contingency, Range of Possible Loss, Portion Not Accrued	500.0
Environmental Remediation Expense	6.0
amount authorized to levy	0.1
lower range of costs	1,900.0
upper range of costs	3,500.0
Class action damages sought	$ 10.0