FINANCIAL INSTRUMENTS (Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Long-Term Debt	$ (3)
Long-term Debt | Fair Value Hedging
Derivative [Line Items]
Carrying Amount of Hedged Long-Term Debt	1,186	$ 1,125
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Long-Term Debt	$ (3)	$ (53)