Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES - Narrative (Details)

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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Aug. 31, 2022
Jul. 01, 2014
Loss Contingencies [Line Items]      
Line of credit facility, maximum borrowing capacity   $ 600,000,000 $ 1,000,000,000
Surety Bond      
Loss Contingencies [Line Items]      
Issued surety bonds $ 25,000    
Extended term for surety bonds 1 year    
Surety Bond | NEW MEXICO      
Loss Contingencies [Line Items]      
Issued surety bonds $ 500,438    
Standby Letters of Credit      
Loss Contingencies [Line Items]      
Standby letters of credit drawn 0    
State And Federal Agencies | Standby Letters of Credit      
Loss Contingencies [Line Items]      
Line of credit facility, maximum borrowing capacity $ 260,000    
Extended term under letter of credit arrangement (in years) 1 year    
Electric Utility Companies | Standby Letters of Credit      
Loss Contingencies [Line Items]      
Line of credit facility, maximum borrowing capacity $ 500,438