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Segment Information - Reconciliation to Adjusted EBITDA (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |
Income from continuing operations, net of income taxes | $ 210.8 | $ 204.1 | $ 256.5 | $ 488.2
Depreciation, depletion and amortization | 82.9 | 80.6 | 162.7 | 156.9
Asset retirement obligation expenses | 12.9 | 15.5 | 25.8 | 30.9
Restructuring charges | 0.1 | 2.0 | 0.2 | 2.1
Asset impairment | 0.0 | 0.0 | 0.0 | 2.0
Provision for NARM and Shoal Creek losses | 1.9 | 33.7 | 3.7 | 33.7
Gain on Business Interruption Insurance Recovery | 28.7 | 0.0 | 28.7 | 0.0
Changes in amortization of basis difference related to equity affiliates | (0.3) | (0.4) | (0.7) | (0.7)
Interest expense, net of capitalized interest | 10.7 | 13.3 | 25.4 | 31.7
Net loss on early debt extinguishment | 0.0 | 2.0 | 0.0 | 8.8
Interest income | (16.8) | (23.1) | (36.0) | (36.2)
Unrealized gains on derivative contracts related to forecasted sales | 0.0 | (40.3) | 0.0 | (159.0)
Unrealized (gains) losses on foreign currency option contracts | (2.4) | (2.8) | 3.3 | (0.6)
Take-or-pay contract-based intangible recognition | (0.8) | (0.6) | (1.5) | (1.2)
Income tax provision | 39.4 | 74.2 | 59.5 | 192.2
Adjusted EBITDA | $ 309.7 | $ 358.2 | $ 470.2 | $ 748.8

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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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