v3.20.2
DEBT (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Debt    
Debt instrument unused and available borrowing capacity amount $ 3,617,000,000 $ 4,315,000,000
Maximum borrowing capacity 4,315,000,000  
Short-term debt 1,535,000,000 771,000,000
Carrying Value    
Debt    
Long-term debt, including current portion 4,502,000,000 4,223,000,000
Fair Value | Level 2    
Debt    
Long-term debt, including current portion 4,548,000,000 4,319,000,000
Bilateral credit lines    
Debt    
Short-term debt 451,000,000 0
Local bank line of credit    
Debt    
Short-term debt 586,000,000 771,000,000
Commercial paper program    
Debt    
Commercial paper, outstanding issuances 498,000,000 0
Liquidity facility    
Debt    
Credit facility, borrowings outstanding $ 0 $ 0