PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Defined Benefit Pension Plans) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plans, Number of Plans, Including Discontinued Operations		45
Defined Benefit Pension Plans, Number of Plans		35
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current		$ 49	$ 50
Pension contributions		261
Pension contributions, including discontinued operations		266
Employer contributions		266	$ 1,656
Expected pension contributions		$ 250
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount rate - benefit obligations	3.17%	2.81%	3.69%	3.17%
Discount rate - net periodic costs		3.50%	3.17%	3.52%
Defined Benefit Plan, Benefit Obligations, Interest Credit Rate for Applicable Benefits		3.51%	3.72%
Defined Benefit Plan, Net Periodic Costs, Interest Credit Rate for Applicable Benefits		3.72%	3.61%	3.45%
Rate of compensation increase - benefit obligations		3.92%	3.84%
Rate of compensation increase - net periodic costs		3.92%	3.88%	3.90%
Expected return on plan assets - net periodic costs		7.11%	7.11%	7.16%
UNITED STATES
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount rate - benefit obligations		3.41%	4.39%
Discount rate - net periodic costs		4.15%	3.66%	4.11%
Defined Benefit Plan, Benefit Obligations, Interest Credit Rate for Applicable Benefits		4.50%	4.50%
Defined Benefit Plan, Net Periodic Costs, Interest Credit Rate for Applicable Benefits		4.50%	4.50%	4.50%
Rate of compensation increase - benefit obligations		4.25%	4.25%
Rate of compensation increase - net periodic costs		4.25%	4.25%	4.25%
Expected return on plan assets - net periodic costs		7.92%	7.92%	7.91%
UNITED STATES | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Payment For Settlement With Plan Participants	$ 940
Payment For Annuity	230
UNITED STATES | Nonqualified Plan | Corporate Segment [Member]
Defined Benefit Plan Disclosure [Line Items]
Annuity Option, Income And Payroll Tax Expense (Benefit)	205
Settlement Charge	687
UNITED STATES | Nonqualified Plan | Corporate Segment [Member] | Cost of sales
Defined Benefit Plan Disclosure [Line Items]
Annuity Option, Income And Payroll Tax Expense (Benefit)	201
UNITED STATES | Nonqualified Plan | Corporate Segment [Member] | Selling, General and Administrative Expenses
Defined Benefit Plan Disclosure [Line Items]
Annuity Option, Income And Payroll Tax Expense (Benefit)	$ 4
Discontinued Operations [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current		$ 0	$ 270