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DEBT - Commercial Paper and Other Short-term Borrowings (Details) - USD ($)
9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Commercial paper    
Short-term Debt [Line Items]    
Maximum amount outstanding during period $ 2,300,000,000  
Short-term debt outstanding $ 2,245,000,000 $ 595,000,000
Weighted average annual interest rate (percent) 5.58%  
FHLB borrowings    
Short-term Debt [Line Items]    
Short-term debt outstanding $ 0