Quarterly report pursuant to Section 13 or 15(d)

Credit facilities and commercial paper notes - Additional Information (Details)

v3.23.1
Credit facilities and commercial paper notes - Additional Information (Details)
 1 Months Ended 3 Months Ended
Feb. 28, 2022
USD ($)
Sep. 30, 2021
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Line of Credit Facility [Line Items]          
Unamortized debt issuance costs     $ 9,000,000   $ 9,000,000
Proceeds from issuance of commercial paper notes     100,000,000 $ 25,000,000  
Credit facilities          
Line of Credit Facility [Line Items]          
Unamortized issuance costs     $ 1,000,000    
Default underlying financings (as a percent, more than)     50.00%    
Credit facilities | LIBOR          
Line of Credit Facility [Line Items]          
Default interest rate (as a percent)     2.00%    
Credit facilities | Rep-Based Facility          
Line of Credit Facility [Line Items]          
Principal amount     $ 100,000,000    
Credit facilities | Approval-Based Facility          
Line of Credit Facility [Line Items]          
Principal amount     $ 200,000,000    
Credit facilities | Approval-Based Facility | Certain approved existing financing          
Line of Credit Facility [Line Items]          
Applicable valuation (as a percent)     85.00%    
Credit facilities | Approval-Based Facility | Others as prescribed by administrative agent          
Line of Credit Facility [Line Items]          
Applicable valuation (as a percent)     67.00%    
Credit facilities | Approval-Based Facility | LIBOR | Minimum          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent)     1.50%    
Credit facilities | Approval-Based Facility | LIBOR | Maximum          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent)     2.00%    
Credit facilities | Approval-Based Facility | Federal Funds Rate | Minimum          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent)     0.50%    
Credit facilities | Approval-Based Facility | Federal Funds Rate | Maximum          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent)     1.00%    
Credit facilities | New Revolving Credit Facility          
Line of Credit Facility [Line Items]          
Principal amount $ 600,000,000        
Term loan fee (as a percent) 1.875%        
Credit facilities | New Revolving Credit Facility | SOFR          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent) 1.875%        
Credit facilities | New Revolving Credit Facility | Prime Rate          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent) 0.875%        
Credit facilities | Existing Unsecured Revolving Credit Facility          
Line of Credit Facility [Line Items]          
Outstanding credit facility     $ 250,000,000    
Line of credit facility, interest rate during period (as a percent)     6.76%    
Unamortized debt issuance costs     $ 2,000,000    
Credit facilities | CarbonCount Green Commercial Paper Note Program          
Line of Credit Facility [Line Items]          
Line of credit facility, interest rate during period (as a percent)     6.18%    
Letter of Credit          
Line of Credit Facility [Line Items]          
Principal amount     $ 100,000,000    
Letter of Credit | CarbonCount Green Commercial Paper Note Program          
Line of Credit Facility [Line Items]          
Percentage of drawn letter of credit (as a percent)   0.0095      
Unused letter of credit capacity (as a percent)   0.40%      
Reduced percentage of letter of credit fee (as a percent)   0.0005      
Commercial Paper          
Line of Credit Facility [Line Items]          
Principal amount     $ 100,000,000    
Credit facility remaining no of days (in days)     397 days    
Commercial Paper | CarbonCount Green Commercial Paper Note Program          
Line of Credit Facility [Line Items]          
Proceeds from issuance of commercial paper notes     $ 100,000,000    
Broker fee percent (as a percent)   0.0010      
Unamortized financing costs     0    
Line of Credit | CarbonCount Delayed Draw Term Loan Facility | Term Loan Facility          
Line of Credit Facility [Line Items]          
Principal amount     $ 383,000,000    
Basis spread on variable rate (as a percent)     2.225%    
Unamortized debt issuance costs     $ 3,000,000    
Line of Credit | CarbonCount Delayed Draw Term Loan Facility | SOFR | Term Loan Facility          
Line of Credit Facility [Line Items]          
Basis spread on variable rate (as a percent)     0.10%