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DEBT (Secured Receivables Credit Facility) (Narrative) (Details) - Secured Receivables Credit Facility - USD ($)
12 Months Ended
Dec. 31, 2019
Oct. 25, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Credit facility capacity   $ 600,000,000  
Commercial Rates for Highly-Rated Issuers or London Interbank Offered Rate (LIBOR) | Minimum      
Debt Instrument [Line Items]      
Interest rate in excess of LIBOR 0.70%    
Commercial Rates for Highly-Rated Issuers or London Interbank Offered Rate (LIBOR) | Maximum      
Debt Instrument [Line Items]      
Interest rate in excess of LIBOR 0.725%    
Letter of Credit      
Debt Instrument [Line Items]      
Credit facility capacity $ 100,000,000    
Line of Credit      
Debt Instrument [Line Items]      
Amount outstanding 0   $ 160,000,000
Loan commitment maturing October 2020      
Debt Instrument [Line Items]      
Credit facility capacity 250,000,000    
Loan commitment maturing October 2021      
Debt Instrument [Line Items]      
Credit facility capacity $ 250,000,000