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Contingencies (Details) $ in Millions | 9 Months Ended
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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

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