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CREDIT FACILITIES AND DEBT (Narrative) (Details)
$ in Millions
1 Months Ended 12 Months Ended
Aug. 23, 2023
USD ($)
Aug. 21, 2023
USD ($)
Jan. 24, 2020
USD ($)
May 30, 2017
USD ($)
Oct. 31, 2012
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
May 02, 2023
USD ($)
Dec. 21, 2020
USD ($)
May 13, 2020
USD ($)
Feb. 18, 2020
USD ($)
Feb. 09, 2012
Debt Instrument [Line Items]                          
(Loss) gain on extinguishment of debt           $ (5.7) $ (66.1) $ 79.9          
Uncommitted receivables purchase facility, maximum borrowing                       $ 300.0  
Settlements of precious metal catalyst obligations           (3.1) (56.2) (31.7)          
Revolving Loan                          
Debt Instrument [Line Items]                          
Long-term line of credit           0.0 0.0            
Line of Credit | Revolving Loan                          
Debt Instrument [Line Items]                          
Maximum borrowing capacity $ 3,500.0               $ 2,850.0        
Line of credit, available increase in borrowing capacity $ 500.0                        
Maximum borrowing capacity, as a percentage of aggregate borrowing capacity 10.00%                        
Alternative maximum borrowing capacity $ 100.0                        
Effective consolidated fixed charge coverage ratio during period         1                
Long-term line of credit           0.0 0.0            
Letters of credit outstanding, amount           55.0 576.1            
Line of Credit | Revolving Loan | Maximum                          
Debt Instrument [Line Items]                          
Line of credit, commitment fee, percent 0.25%                        
Line of Credit | Revolving Loan | Base Rate | Minimum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 0.25%                        
Line of Credit | Revolving Loan | Base Rate | Maximum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 1.00%                        
Line of Credit | Revolving Loan | Company Credit Rating | Minimum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 1.25%                        
Line of Credit | Revolving Loan | Company Credit Rating | Maximum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 2.00%                        
Line of Credit | Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 1.25%                        
Line of Credit | Revolving Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum                          
Debt Instrument [Line Items]                          
Basis spread on variable rate 2.00%                        
2028 Senior Notes                          
Debt Instrument [Line Items]                          
Long-term Debt           $ 801.6 801.6            
Initial 2025 Senior Secured Notes                          
Debt Instrument [Line Items]                          
Long-term Debt                     $ 1,000.0    
Debt Instrument, Interest Rate, Stated Percentage                     9.25%    
Additional 2025 Senior Secured Notes                          
Debt Instrument [Line Items]                          
Long-term Debt                   $ 250.0      
Debt Instrument, Interest Rate, Stated Percentage                   9.25%      
Debt , issued                   100.25%      
2025 Senior Notes                          
Debt Instrument [Line Items]                          
Long-term Debt       $ 725.0                  
Debt Instrument, Interest Rate, Stated Percentage       7.25%                  
Proceeds from debt, net       $ 711.6                  
Extinguishment of debt, amount             5.0 55.5          
Repayments of long-term debt             4.8 37.5          
(Loss) gain on extinguishment of debt             0.2 17.5          
Redemption price as a percentage           100.00%              
Repayments of Long-Term Debt, Excluding Accrued Interest and Fees           $ 664.5              
2028 Senior Notes                          
Debt Instrument [Line Items]                          
Long-term Debt     $ 1,000.0                    
Debt Instrument, Interest Rate, Stated Percentage     6.00%                    
Proceeds from debt, net     $ 987.0                    
Extinguishment of debt, amount             24.9 173.5          
Repayments of long-term debt           0.0 21.1 109.3          
(Loss) gain on extinguishment of debt             3.6 62.4          
2020 Senior Secured Notes                          
Debt Instrument [Line Items]                          
Debt Instrument, Interest Rate, Stated Percentage                         8.25%
2023 Senior Notes                          
Debt Instrument [Line Items]                          
Debt Instrument, Interest Rate, Stated Percentage     7.00%                    
2025 Senior Secured Notes                          
Debt Instrument [Line Items]                          
Repayments of long-term debt           $ 0.0 1,307.4 $ 0.0          
(Loss) gain on extinguishment of debt             $ 69.9            
Redemption price as a percentage             104.625%            
2030 Senior Notes                          
Debt Instrument [Line Items]                          
Long-term Debt   $ 500.0                      
Debt Instrument, Interest Rate, Stated Percentage   7.875%                      
Proceeds from debt, net   $ 488.8                      
Debt , issued   99.324%                      
Debt, redemption price, percent (up to)   35.00%                      
Redemption price as a percentage   107.875%                      
Debt Instrument, Conditional Redemption Threshold Percentage of Aggregate Principal Amount Originally Issued Remains Outstanding   65.00%