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Litigation (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Loss Contingencies [Line Items] |  |
Potential liabilities related to litigation and environmental matters | $ 37.0 | $ 41.5
Loss Contingency, Receivable | 14.1 | 17.5
Loss Contingency, Regulated | $ 21.2 | $ 21.3

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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Definition Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12053-110248 + Details
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