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DESCRIPTION OF BUSINESS (Details)
1 Months Ended 6 Months Ended
Apr. 02, 2020
USD ($)
Mar. 27, 2020
USD ($)
Jun. 30, 2020
USD ($)
segment
shares
Jun. 30, 2019
USD ($)
Apr. 03, 2020
shares
Feb. 27, 2020
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Number of reportable segments | segment     3      
Common stock, shares, issued (in shares) | shares     866,164,968   866,158,910  
Aggregate principal balance           $ 11,000,000,000.0
Net transfers to parent   $ 10,900,000,000 $ 10,359,000,000 $ 548,000,000    
Capital contributions received from contributions from parent $ 590,000,000