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ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AOCI Attributable to Parent [Roll Forward]    
Balance as of Beginning of Period $ 15,039,387 $ 14,173,892
Amounts Reclassified from AOCI 2,500 5,200
Other Comprehensive Loss, Net of Tax 2,500 5,200
Balance as of End of Period 15,341,257 14,543,588
Accumulated Other Comprehensive Loss    
AOCI Attributable to Parent [Roll Forward]    
Balance as of Beginning of Period (26,472) (33,737)
Balance as of End of Period (23,949) (28,534)
Balance as of End of Period (24,000)  
Qualified Cash Flow Hedging Instruments    
AOCI Attributable to Parent [Roll Forward]    
Balance as of Beginning of Period (400) (400)
Amounts Reclassified from AOCI 0 0
Other Comprehensive Loss, Net of Tax 0 0
Balance as of End of Period (400) (400)
Defined Benefit Plans    
AOCI Attributable to Parent [Roll Forward]    
Balance as of Beginning of Period (26,100) (33,300)
Amounts Reclassified from AOCI 2,500 5,200
Other Comprehensive Loss, Net of Tax 2,500 5,200
Balance as of End of Period $ (23,600) $ (28,100)