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Financial Instruments, Guarantees With Off-Balance-Sheet Risk and Other Guarantees (Details) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Feb. 01, 2023
Jan. 31, 2022
Nov. 06, 2020
Apr. 03, 2017
Guarantee Obligations [Line Items]                  
Letters of credit outstanding, amount $ 569,600,000   $ 569,600,000            
Asset retirement obligations 750,000,000   750,000,000 $ 719,800,000 $ 728,200,000        
Surety bonds and bank guarantees outstanding to secure reclamation obligations or activities 1,250,100,000   1,250,100,000 1,294,700,000          
Letters of credit outstanding for reclamation 431,700,000   431,700,000            
Interest expense     140,300,000 183,400,000 139,800,000        
Restricted cash included in “Restricted cash and collateral arrangements” 110,300,000   110,300,000            
Collateralized Agreements 77,000,000   77,000,000 23,800,000          
Accrued Reclamation Costs, Current 43,900,000   43,900,000 15,000,000          
Financial Instrument, Surety Bonds Amount $ 1,376,800,000   1,376,800,000            
Line of Credit Facility, Collateral 111.0 million                
Surety Bond                  
Guarantee Obligations [Line Items]                  
Transaction support agreements, additional collateral to be posted               $ 75,000,000  
Debt instrument, transaction support agreements, fair value of second liens on mining equipment               200,000,000  
Transaction support agreements, additional collateral to be posted per year through 2024               25,000,000  
Transaction support agreements, additional collateral term, free cash flow in any twelve-month period               100,000,000  
Transaction support agreements, additional collateral term, sale of assets benchmark (in excess of)               $ 10,000,000  
Debt Instrument, Transaction Support Agreements, Additional Collateral Posted     102,400,000            
Surety Bond | Subsequent Event                  
Guarantee Obligations [Line Items]                  
Debt Instrument, Transaction Support Agreements, Additional Collateral Posted   $ 74,400,000              
Accounts Receivable Securitization Program, April 3, 2020                  
Guarantee Obligations [Line Items]                  
Exit facility, maximum borrowing capacity             $ 175,000,000   $ 250,000,000
Line of credit facility, remaining borrowing capacity $ 7,000,000   7,000,000            
Accounts Receivable Securitization Program, April 3, 2020 | Scenario, Forecast                  
Guarantee Obligations [Line Items]                  
Exit facility, maximum borrowing capacity           $ 225,000,000      
Secured Debt | Accounts Receivable Securitization Program, April 3, 2020                  
Guarantee Obligations [Line Items]                  
Letters of credit outstanding, amount 168,000,000   168,000,000            
Long-term debt 0   0            
Interest expense     $ 3,800,000 $ 2,900,000 $ 2,600,000        
Secured Debt | Accounts Receivable Securitization Program, April 3, 2020 | LIBOR                  
Guarantee Obligations [Line Items]                  
Basis spread on variable rate     2.10%            
Letter of Credit                  
Guarantee Obligations [Line Items]                  
Letters of credit outstanding, amount 103,300,000   $ 103,300,000            
Exit facility, maximum borrowing capacity $ 250,000,000   $ 250,000,000            
Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding 103.00%   103.00%            
Stated interest rate 0.75%   0.75%            
Letter of Credit | Maximum                  
Guarantee Obligations [Line Items]                  
Transaction support agreements, additional collateral demands $ 5,000,000   $ 5,000,000