v3.26.1
Significant Accounting Policies - Variable Interest Entities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Variable Interest Entity        
Cash and cash equivalents $ 5,071 $ 8,505    
Prepaid expenses and other current assets 26,131 36,624    
Property, plant and equipment, net 2,150,699 2,091,747    
Accrued expenses and other payables (128,165) (184,184)    
Current maturities of long-term debt (11,497) (11,457)    
Long-term debt, net (3,264,175) (3,223,126)    
Redeemable noncontrolling interests (598) (559)    
Partnership's equity in VIEs (236,528) (296,565) $ 142,454 $ 145,849
Nonrelated Party        
Variable Interest Entity        
Accounts receivable, net 638,201 661,157    
Accounts payable (450,461) (495,180)    
Related Party        
Variable Interest Entity        
Accounts receivable-affiliates 526 313    
Accounts payable (1) (1)    
Variable Interest Entity, Primary Beneficiary        
Variable Interest Entity        
Cash and cash equivalents 46 96    
Prepaid expenses and other current assets 259 281    
Property, plant and equipment, net 15,507 15,527    
Accrued expenses and other payables (174) (225)    
Current maturities of long-term debt (1,997) (1,957)    
Long-term debt, net (7,355) (7,867)    
Redeemable noncontrolling interests (598) (559)    
Partnership's equity in VIEs 6,221 5,563    
Variable Interest Entity, Primary Beneficiary | Nonrelated Party        
Variable Interest Entity        
Accounts receivable, net 20 0    
Accounts payable (13) (45)    
Variable Interest Entity, Primary Beneficiary | Related Party        
Variable Interest Entity        
Accounts receivable-affiliates $ 526 $ 312    
Parent Co        
Variable Interest Entity        
Parent ownership percentage in aviation entities 90.00%      
Noncontrolling Interest        
Variable Interest Entity        
Noncontrolling interest ownership percentage in aviation entities 10.00%