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Long-Term Debt - CEI Term Loans and CEI Revolving Credit Facility (Details)
3 Months Ended 6 Months Ended
Feb. 06, 2023
USD ($)
stepdown
Oct. 05, 2022
USD ($)
stepdown
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jul. 20, 2020
USD ($)
Long-term debt              
Interest rate     4.30%   4.30%    
Loss on extinguishment     $ 0 $ 0 $ 197,000,000 $ 0  
Senior Notes | CEI Term Loan B              
Long-term debt              
Debt instrument, face amount $ 2,500,000,000            
Number of stepdowns | stepdown 1            
Leverage ratio stepdown 0.25%            
Percentage of original principal amount amortization 0.25%            
Percentage of principal amount issued 99.00%            
Senior Notes | CEI Term Loan B | SOFR | Component One | Minimum              
Long-term debt              
Spread on variable rate 0.50%            
Senior Notes | CEI Term Loan B | SOFR | Component Two              
Long-term debt              
Spread on variable rate 1.00%            
Senior Notes | CEI Term Loan B | Fed Funds Effective Rate Overnight Index Swap Rate | Component Two              
Long-term debt              
Spread on variable rate 0.50%            
Senior Notes | CEI Term Loan B | Base rate              
Long-term debt              
Spread on variable rate 2.25%            
Senior Notes | CEI Term Loan B | Applicable Margin              
Long-term debt              
Spread on variable rate 3.25%            
Senior Notes | CRC Term Loan and CRC Incremental Term Loan              
Long-term debt              
Loss on extinguishment $ 197,000,000            
CEI Revolving Credit Facility              
Long-term debt              
Amount outstanding     48,000,000   48,000,000    
CEI Revolving Credit Facility | Line of Credit              
Long-term debt              
Credit facility             $ 2,250,000,000
CEI Revolving Credit Facility, Permitted Use Reserves              
Long-term debt              
Accordion feature             $ 40,000,000
Line of Credit              
Long-term debt              
Line of credit facility, commitment fee percentage   0.35%          
Amount outstanding     71,000,000   71,000,000    
Line of Credit | SOFR              
Long-term debt              
Spread on variable rate   2.25%          
Line of Credit | SOFR | Component One              
Long-term debt              
Spread on variable rate   0.10%          
Line of Credit | SOFR | Component One | Minimum              
Long-term debt              
Spread on variable rate   0.00%          
Line of Credit | SOFR | Component Two              
Long-term debt              
Spread on variable rate   1.00%          
Line of Credit | Fed Funds Effective Rate Overnight Index Swap Rate | Component Two              
Long-term debt              
Spread on variable rate   0.50%          
Line of Credit | Base rate              
Long-term debt              
Spread on variable rate   1.25%          
Line of Credit | Secured Debt              
Long-term debt              
Debt instrument, face amount   $ 750,000,000          
Interest rate   1.25%          
Number of stepdowns | stepdown   3          
Leverage ratio stepdown   0.25%          
Line of Credit | Revolving Credit Facility              
Long-term debt              
Credit facility   $ 2,250,000,000          
Number of stepdowns | stepdown   3          
Leverage ratio stepdown   0.05%          
Line of Credit | Letter of Credit              
Long-term debt              
Credit facility   $ 388,000,000          
Revolving Credit Facility              
Long-term debt              
Available borrowing capacity     $ 2,100,000,000   $ 2,100,000,000