Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.2
Credit facilities and commercial paper notes - Additional Information (Details) - USD ($)
 1 Months Ended 6 Months Ended
Aug. 04, 2023
Feb. 28, 2022
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Dec. 31, 2022
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 $ 50,000,000    
Credit facilities            
Line of Credit Facility [Line Items]            
Unamortized issuance costs     $ 1,000,000      
Default underlying financings (as a percent, more than)     50.00%      
Default interest rate (as a percent)     2.00%      
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 | Approval-Based Facility | SOFR | Subsequent Event            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 2.25%          
Credit facilities | Rep-Based Facility            
Line of Credit Facility [Line Items]            
Principal amount     $ 100,000,000      
Credit facilities | New Revolving Credit Facility            
Line of Credit Facility [Line Items]            
Principal amount     840,000,000   $ 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     $ 175,000,000      
Line of credit facility, interest rate during period (as a percent)     7.02%      
Unamortized debt issuance costs     $ 3,000,000      
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)     6.65%      
Line of Credit | CarbonCount Delayed Draw Term Loan Facility | Term Loan Facility            
Line of Credit Facility [Line Items]            
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%      
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      
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