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DEBT (Senior Unsecured Revolving Credit Facility) (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Nov. 30, 2021
Oct. 31, 2021
Dec. 31, 2020
Senior unsecured revolving credit facility        
Debt Instrument [Line Items]        
Credit facility capacity   $ 750,000,000    
Amount outstanding $ 0     $ 0
Senior unsecured revolving credit facility | LIBOR        
Debt Instrument [Line Items]        
Interest rate in excess of LIBOR 1.00%      
Senior unsecured revolving credit facility | Letter of Credit        
Debt Instrument [Line Items]        
Credit facility capacity   $ 150,000,000    
Secured Receivables Credit Facility        
Debt Instrument [Line Items]        
Credit facility capacity     $ 600,000,000  
Secured Receivables Credit Facility | Letter of Credit        
Debt Instrument [Line Items]        
Credit facility capacity     $ 100,000,000