PENSION AND OTHER POSTRETIREMENT BENEFITS 2 (Details) - USD ($)	2 Months Ended	12 Months Ended
	Feb. 28, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Postretirement Benefits [Member]
Actuarial assumptions used to determine benefit obligations as of December 31: [Abstract]
Discount rate			3.03%	4.07%	3.39%
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Support Methodology And Source Data			To determine discount rates for our U.S. pension and other postretirement benefit plans, we use a modeling process that involves matching the expected cash outflows of our benefit plans to a yield curve constructed from a portfolio of high quality, fixed-income debt instruments. We use the single weighted-average yield of this hypothetical portfolio as a discount rate benchmark. We utilize a full yield curve approach in the estimation of the service and interest cost components of net periodic pension benefit (income) for our significant pension plans. This approach applies the specific spot rates along the yield curve used in the determination of the pension benefit obligation to their underlying projected cash flows and provides a more precise measurement of service and interest costs by improving the correlation between projected cash flows and their corresponding spot rates. For our U.S. pension plans, the single weighted average spot rates used to determine service and interest costs for 2020 are 3.33% and 2.76%. The discount rate used to determine the other postretirement benefit obligation is lower principally due to a shorter expected duration of other postretirement plan obligations as compared to pension plan obligations.
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation	3.65%		4.07%	3.39%	3.60%
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Support Methodology And Source Data			To determine discount rates for our U.S. pension and other postretirement benefit plans, we use a modeling process that involves matching the expected cash outflows of our benefit plans to a yield curve constructed from a portfolio of high quality, fixed-income debt instruments. We use the single weighted-average yield of this hypothetical portfolio as a discount rate benchmark. We utilize a full yield curve approach in the estimation of the service and interest cost components of net periodic pension benefit (income) for our significant pension plans. This approach applies the specific spot rates along the yield curve used in the determination of the pension benefit obligation to their underlying projected cash flows and provides a more precise measurement of service and interest costs by improving the correlation between projected cash flows and their corresponding spot rates. For our U.S. pension plans, the single weighted average spot rates used to determine service and interest costs for 2020 are 3.33% and 2.76%. The discount rate used to determine the other postretirement benefit obligation is lower principally due to a shorter expected duration of other postretirement plan obligations as compared to pension plan obligations.
UNITED STATES
Actuarial assumptions used to determine benefit obligations as of December 31: [Abstract]
Discount rate			3.22%	4.35%	3.68%
Expected annual rate of compensation increase			3.25%	3.25%	4.50%
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Support Methodology And Source Data			To determine discount rates for our U.S. pension and other postretirement benefit plans, we use a modeling process that involves matching the expected cash outflows of our benefit plans to a yield curve constructed from a portfolio of high quality, fixed-income debt instruments. We use the single weighted-average yield of this hypothetical portfolio as a discount rate benchmark. We utilize a full yield curve approach in the estimation of the service and interest cost components of net periodic pension benefit (income) for our significant pension plans. This approach applies the specific spot rates along the yield curve used in the determination of the pension benefit obligation to their underlying projected cash flows and provides a more precise measurement of service and interest costs by improving the correlation between projected cash flows and their corresponding spot rates. For our U.S. pension plans, the single weighted average spot rates used to determine service and interest costs for 2020 are 3.33% and 2.76%. The discount rate used to determine the other postretirement benefit obligation is lower principally due to a shorter expected duration of other postretirement plan obligations as compared to pension plan obligations.
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			4.35%	3.68%	4.20%
Expected rate of return on plan assets			6.75%	7.75%	7.75%
Expected annual rate of compensation increase			3.25%	4.50%	4.50%
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Support Methodology And Source Data			To determine discount rates for our U.S. pension and other postretirement benefit plans, we use a modeling process that involves matching the expected cash outflows of our benefit plans to a yield curve constructed from a portfolio of high quality, fixed-income debt instruments. We use the single weighted-average yield of this hypothetical portfolio as a discount rate benchmark. We utilize a full yield curve approach in the estimation of the service and interest cost components of net periodic pension benefit (income) for our significant pension plans. This approach applies the specific spot rates along the yield curve used in the determination of the pension benefit obligation to their underlying projected cash flows and provides a more precise measurement of service and interest costs by improving the correlation between projected cash flows and their corresponding spot rates. For our U.S. pension plans, the single weighted average spot rates used to determine service and interest costs for 2020 are 3.33% and 2.76%. The discount rate used to determine the other postretirement benefit obligation is lower principally due to a shorter expected duration of other postretirement plan obligations as compared to pension plan obligations.
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligations			$ 357,000,000	$ 327,000,000
Accumulated benefit obligations			347,000,000	321,000,000
Fair value of plan assets			0	0
Defined Benefit Plan Accumulated Benefit Obligation [Abstract]
Accumulated benefit obligation			$ 17,200,000,000	$ 16,100,000,000
UNITED STATES | Service Cost
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			4.47%	3.77%	4.42%
UNITED STATES | Interest Costs
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			3.94%	3.27%	3.49%
UNITED STATES | Forecast [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected rate of return on plan assets		6.15%
UNITED STATES | Forecast [Member] | Service Cost
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation		3.33%
UNITED STATES | Forecast [Member] | Interest Costs
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation		2.76%
Foreign Plan [Member]
Actuarial assumptions used to determine benefit obligations as of December 31: [Abstract]
Discount rate			1.81%	2.63%	2.36%
Expected annual rate of compensation increase			2.47%	2.46%	0.73%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			2.63%	2.36%	2.51%
Expected rate of return on plan assets			5.14%	6.23%	6.43%
Expected annual rate of compensation increase			2.46%	2.49%	2.17%
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligations			$ 1,018,000,000	$ 1,668,000,000
Accumulated benefit obligations			973,000,000	1,604,000,000
Fair value of plan assets			233,000,000	873,000,000
Defined Benefit Plan Accumulated Benefit Obligation [Abstract]
Accumulated benefit obligation			$ 6,800,000,000	$ 6,100,000,000
Foreign Plan [Member] | Service Cost
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			2.26%	2.20%	2.14%
Foreign Plan [Member] | Interest Costs
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate - benefit obligation			2.34%	2.08%	2.19%