PENSION AND POSTRETIREMENT BENEFIT PLANS (Estimated Future Benefit Payments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2029	Dec. 31, 2028	Dec. 31, 2027	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Document Period End Date											Dec. 31, 2019
Defined Benefit Plan, Plan Assets, Contributions by Employer											$ 63	$ 71	$ 396
Defined contribution plan expense											$ 200	$ 200	$ 200
Forecast [Member]
Pension, Postretirement And Postemployment Liabilities Statement [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 120	$ 120	$ 120	$ 120	$ 120	$ 120	$ 120	$ 120	$ 120	$ 120