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SUBSEQUENT EVENTS - Narrative (Details) - Trust Notes - USD ($)
Jul. 07, 2020
Jun. 30, 2020
Subsequent Event [Line Items]    
Line of credit facility, maximum borrowing capacity   $ 5,000,000,000
Subsequent Event    
Subsequent Event [Line Items]    
Debt instrument, face amount $ 650,000,000  
Debt instrument, stated percentage 1.40%