Annual report pursuant to Section 13 and 15(d)

Credit facilities and commercial paper notes (Details)

v3.24.0.1
Credit facilities and commercial paper notes (Details) - USD ($)
 1 Months Ended 12 Months Ended
Feb. 28, 2022
Dec. 31, 2023
Dec. 31, 2022
Jan. 31, 2022
Line of Credit Facility [Line Items]        
Credit facilities   $ 400,861,000 $ 50,698,000  
Credit Facilities | Approval-Based Facility        
Line of Credit Facility [Line Items]        
Maximum outstanding amount     200,000,000  
Credit Facilities | Representation-Based Facility        
Line of Credit Facility [Line Items]        
Maximum outstanding amount   100,000,000    
Credit Facilities | Unsecured Credit Facility        
Line of Credit Facility [Line Items]        
Maximum outstanding amount $ 600,000,000 915,000,000 $ 600,000,000 $ 400,000,000
Outstanding credit facility   $ 401,000,000    
Effective interest rate   7.28%    
Unamortized financing costs   $ 2,000,000    
Term loan fee (in percent) 1.875%      
Credit Facilities | Unsecured Credit Facility | Secured Overnight Financing Rate SOFR        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 1.875%      
Credit Facilities | Unsecured Credit Facility | Prime Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.875%      
Credit Facilities | New Revolving Credit Facility | Additional Variable Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.10%    
Line of Credit | Unsecured Credit Facility | Unsecured Debt | Secured Overnight Financing Rate SOFR        
Line of Credit Facility [Line Items]        
Variable rate, maximum downward adjustment (in percent) 0.10%      
Commercial Paper | CarbonCount© Green Commercial Paper Note Program        
Line of Credit Facility [Line Items]        
Maximum outstanding amount   $ 100,000,000    
Effective interest rate   6.80%    
Credit facility remaining no of days   397 days    
Credit facilities   $ 30,000,000    
Broker fee percent   0.0010    
Unamortized financing costs   $ 0    
Letter of Credit | CarbonCount© Green Commercial Paper Note Program        
Line of Credit Facility [Line Items]        
Maximum outstanding amount   $ 100,000,000    
Percentage of drawn letter of credit   0.0140    
Unused letter of credit capacity percentage   0.40%    
Reduced percentage of letter of credit Fee   0.0010    
Letter of Credit | CarbonCount© Green Commercial Paper Note Program | Secured Overnight Financing Rate SOFR | Variable Rate Component One        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   2.125%    
Letter of Credit | CarbonCount© Green Commercial Paper Note Program | Secured Overnight Financing Rate SOFR | Variable Rate Component Two        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.10%