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Segment Information - Reconciliation to Adjusted EBITDA (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Segment Reporting Information [Line Items]        
Income (loss) from continuing operations, net of income taxes $ 384.4 $ (59.6) $ 675.9 $ (160.3)
Depreciation, depletion and amortization 80.7 77.9 227.4 223.3
Asset retirement obligation expenses 13.1 14.3 40.8 45.3
Restructuring charges 1.0 1.7 2.8 5.9
Changes in deferred tax asset valuation allowance and reserves and amortization of basis difference related to equity affiliates (0.5) (6.4) (1.7) (8.4)
Interest expense 33.8 45.5 110.8 143.3
Net loss (gain) on early debt extinguishment 8.7 (16.0) 34.5 (31.3)
Interest income (4.9) (1.4) (6.3) (4.2)
Unrealized (gains) losses on derivative contracts related to forecasted sales (90.4) 238.4 235.1 264.0
Unrealized losses (gains) on foreign currency option contracts 1.4 (0.6) 4.4 8.2
Take-or-pay contract-based intangible recognition (0.8) (1.0) (2.2) (3.2)
Income tax provision (benefit) 10.7 (3.7) 21.0 (10.3)
Adjusted EBITDA 438.9 289.1 1,344.2 472.3
Asset impairment $ 1.7 $ 0.0 $ 1.7 $ 0.0