XML 144 R114.htm IDEA: XBRL DOCUMENT v3.25.0.1
Financial Instruments, Guarantees With Off-Balance-Sheet Risk and Other Guarantees (Details)
$ in Millions, $ in Millions
 12 Months Ended
Feb. 03, 2023
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2024
AUD ($)
Dec. 31, 2023
AUD ($)
Apr. 14, 2023
USD ($)
Feb. 13, 2023
USD ($)
Mar. 01, 2022
USD ($)
Guarantee Obligations [Line Items]                  
Interest expense, net of capitalized interest   $ 46.9 $ 59.8 $ 140.3          
Restricted cash included in “Restricted cash and collateral”   682.2 680.9            
Financial Instrument, Surety Bonds Amount   1,017.5              
Net loss on early debt extinguishment   0.0 8.8 57.9          
Restricted cash and collateral   809.8 957.6            
Capitalized debt issuance costs related to bank guarantees   1.4              
Cash-backed bank guarantee facilities   168.5              
Surety Trust Account                  
Guarantee Obligations [Line Items]                  
Restricted cash included in “Restricted cash and collateral”   394.6 444.0            
Collateralized letters of credit funding                  
Guarantee Obligations [Line Items]                  
Restricted cash included in “Restricted cash and collateral”   287.6 236.9            
Deposits with Regulatory Authorities                  
Guarantee Obligations [Line Items]                  
Deposits Assets   127.6 276.7   $ 205.0 $ 404.0      
Cash backed bank guarantees                  
Guarantee Obligations [Line Items]                  
Restricted cash included in “Restricted cash and collateral”         $ 271.0 $ 95.0      
Asset Retirement Obligations                  
Guarantee Obligations [Line Items]                  
Financial Instrument, Surety Bonds Amount   925.1              
Letters of credit outstanding, amount   55.2              
Surety Bonds and Letters of Credit Outstanding for Reclamation Support   980.3              
Letters of Credit in Support of Surety Bonds   (55.2)              
Total Obligations Supported, Net   925.1              
Other Obligations                  
Guarantee Obligations [Line Items]                  
Financial Instrument, Surety Bonds Amount   92.4              
Letters of credit outstanding, amount   91.5              
Surety Bonds and Letters of Credit Outstanding for Other Support   183.9              
Letters of Credit in Support of Surety Bonds   (0.1)              
Total Obligations Supported, Net   183.8              
Asset Retirement and Other Obligations                  
Guarantee Obligations [Line Items]                  
Financial Instrument, Surety Bonds Amount   1,017.5              
Letters of credit outstanding, amount   146.7              
Total Surety Bonds and Letters of Credit Outstanding   1,164.2              
Total Letters of Credit in Support of Surety Bonds   (55.3)              
Total Obligations Supported, Net   1,108.9              
Surety Bond                  
Guarantee Obligations [Line Items]                  
Surety Agreement Liquidity Covenant, Amount   400.0              
Difference between penal sum of all surety bonds and amount of collateral posted in favor of surety providers   495.5              
Company maintain minimum liquidity             $ 237.2    
Collateral amount held in trust accounts   394.6              
Collateral amount held as letters of credit   $ 127.4              
Surety Bond | Maximum                  
Guarantee Obligations [Line Items]                  
Debt Instrument Covenant, Net Leverage Ratio   1.5     1.5        
Debt Instrument, Collateral Amount   $ 522.0              
Surety Bond | Minimum                  
Guarantee Obligations [Line Items]                  
Debt Instrument Covenant, Net Leverage Ratio   1.0     1.0        
3.250% Convertible Senior Notes due March 2028 | Surety Bond                  
Guarantee Obligations [Line Items]                  
Debt Instrument, Funded, Percent   50.00%     50.00%        
3.250% Convertible Senior Notes due March 2028 | Senior Notes                  
Guarantee Obligations [Line Items]                  
Debt principal amount                 $ 320.0
Stated interest rate   3.25%     3.25%        
Accounts Receivable Securitization Program                  
Guarantee Obligations [Line Items]                  
Exit facility, maximum borrowing capacity               $ 225.0  
Interest expense, net of capitalized interest   $ 2.6 3.6 3.8          
Line of Credit Facility, Previous Maximum Borrowing Capacity               $ 175.0  
Accounts Receivable Securitization Program | Secured Debt                  
Guarantee Obligations [Line Items]                  
Basis spread on variable rate   2.10%              
Long-term debt   $ 0.0              
Interest expense, net of capitalized interest   2.6 3.6 $ 3.8          
Accounts Receivable from Securitization   138.4              
Secured Debt | Accounts Receivable Securitization Program                  
Guarantee Obligations [Line Items]                  
Letters of credit outstanding, amount   60.4              
Letter of Credit                  
Guarantee Obligations [Line Items]                  
Exit facility, maximum borrowing capacity $ 324.0 $ 250.0              
Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding   103.00%     103.00%        
Stated interest rate   0.75%     0.75%        
Line of Credit Facility, Increase (Decrease), Net $ 65.0                
Net loss on early debt extinguishment     $ 8.8            
Revolving credit facility, fee on unused borrowings 6.00%                
Commitment fee percentage 0.50%                
Letter of Credit | Maximum                  
Guarantee Obligations [Line Items]                  
Transaction support agreements, additional collateral demands   $ 5.0              
Collateralized Letter of Credit Agreement                  
Guarantee Obligations [Line Items]                  
Letters of credit outstanding, amount   115.6              
Cash-collateralized Letters of Credit   $ 119.1