Quarterly report [Sections 13 or 15(d)]

Debt - Narrative (Details)

v3.25.2
Debt - Narrative (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Aug. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Sep. 30, 2024
Sep. 19, 2024
Feb. 28, 2022
Debt Instrument [Line Items]              
Draw down on revolving credit facility   $ 680,536 $ 0        
Subject to mandatory redemption, period   15 years          
Accrued return paid   $ 95,414 $ 62,153        
Subsidiary Units Subject to Mandatory Redemption              
Debt Instrument [Line Items]              
Accrued interest   100   $ 100      
Historical costs of units cost and fair value of units   $ 3,300          
Implicit rate   9.80%          
Accrued return paid   $ 200          
Credit Agreement | Medium-Term Note | Secured Debt              
Debt Instrument [Line Items]              
Original principal $ 1,650,000            
Debt face amount         $ 1,700,000    
Principal outstanding   1,691,500   1,700,000      
Accrued interest   300   300      
Unamortized deferred issuance costs   25,700   27,800      
Credit Agreement | Line of Credit | Revolving Credit Facility              
Debt Instrument [Line Items]              
Accrued interest   $ 600          
Basis spread on variable rate   2.50%          
Deferred issuance cost   $ 8,600   9,600      
Borrowing capacity   1,400,000   1,400,000      
Commitments available to be borrowed   1,215,900   1,399,700      
Draw down on revolving credit facility   184,100          
Reduction on revolving credit facility from undrawn letter of credit       300      
Unpaid commitment fees   $ 800   1,200      
Credit Agreement | Line of Credit | Revolving Credit Facility | Minimum              
Debt Instrument [Line Items]              
Commitment fee on undrawn amounts   0.25%          
Credit Agreement | Line of Credit | Revolving Credit Facility | Maximum              
Debt Instrument [Line Items]              
Commitment fee on undrawn amounts   0.50%          
Senior Secured Notes Due February 2030 | Senior Secured Notes              
Debt Instrument [Line Items]              
Debt face amount             $ 400,000
Accrued interest   $ 7,300   7,300      
Unamortized deferred issuance costs   5,100   5,600      
Senior Secured Notes Due August 2032 | Senior Secured Notes              
Debt Instrument [Line Items]              
Debt face amount       600,000   $ 600,000  
Accrued interest   29,400   $ 20,000      
Debt instrument, face amount, percentage       99.50%      
Unamortized discounts and debt issuance costs, including discount   $ 20,600   $ 21,800