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Asset Retirement Obligations Contingencies - Gypstack (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |
Discounted asset retirement obligation | $ 2,213.4 | $ 1,905.6 | $ 1,749.3
Unfavorable Regulatory Action |  |  |
Loss Contingencies [Line Items] |  |  |
Discounted asset retirement obligation | 1,200.0 | $ 1,000.0 |
2015 Consent Decrees With EPA | Unfavorable Regulatory Action |  |  |
Loss Contingencies [Line Items] |  |  |
Asset retirement obligations, undiscounted | 2,200.0 |  |
Discounted asset retirement obligation | $ 819.9 |  |

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- Definition Undiscounted amount of the accrual for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480102/450-20-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481931/410-30-50-7 + Details
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