PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Change in Projected Benefit Obligations, Plan Assets and Funded Status of All Significant Plans) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Change in Benefit Obligations [Roll Forward]
Actuarial changes in assumptions and experience	$ (1,268)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		$ 28,200
Fair value of plan assets at end of year		21,200	$ 28,200
Defined Benefit Pension Plans
Defined Benefit Plan, Change in Benefit Obligations [Roll Forward]
Benefit obligations at beginning of year	35,309	32,977	35,309
Service cost		392	387	$ 399
Interest cost		680	594	767
Plan participants' contributions		12	10
Actuarial changes in assumptions and experience		(8,433)	(820)
Benefits paid		(1,539)	(1,582)
Plan amendments		(25)	2
Defined Benefit Plan Business Combinations And Acquisitions Divestiture Other Benefit Obligation		(602)	8
Effect of foreign exchange rates		(600)	(545)
Termination Benefits/curtailment cost/settlements		(1)	(386)
Benefit obligations at end of year		22,861	32,977	35,309
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	26,406	28,167	26,406
Actual return on plan assets		(4,556)	2,501
Employer contributions		235	1,219
Plan participants' contributions		12	10
Benefits paid		(1,539)	(1,582)
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		(592)	10
Effect of foreign exchange rates		(496)	(397)
Fair value of plan assets at end of year		21,231	28,167	26,406
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		(1,630)	(4,810)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Assets for Plan Benefits, Defined Benefit Plan		1,035	1,173
Accrued and other current liabilities		(66)	(58)
Pension and other postretirement benefits - noncurrent		(2,599)	(5,925)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position		(1,630)	(4,810)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Net loss (gain)		7,045	9,934
Prior service credit		(116)	(112)
Pretax balance in AOCL at end of year		6,929	9,822
Other Postretirement Benefit Plans
Defined Benefit Plan, Change in Benefit Obligations [Roll Forward]
Benefit obligations at beginning of year	1,464	1,251	1,464
Service cost		6	7	7
Interest cost		26	23	40
Plan participants' contributions		0	0
Actuarial changes in assumptions and experience		(318)	(98)
Benefits paid		(67)	(141)
Plan amendments		0	0
Defined Benefit Plan Business Combinations And Acquisitions Divestiture Other Benefit Obligation		0	0
Effect of foreign exchange rates		(5)	(4)
Termination Benefits/curtailment cost/settlements		0	0
Benefit obligations at end of year		893	1,251	1,464
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 0	0	0
Actual return on plan assets		0	0
Employer contributions		0	0
Plan participants' contributions		0	0
Benefits paid		0	0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		0	0
Effect of foreign exchange rates		0	0
Fair value of plan assets at end of year		0	0	$ 0
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		(893)	(1,251)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Assets for Plan Benefits, Defined Benefit Plan		0	0
Accrued and other current liabilities		(88)	(99)
Pension and other postretirement benefits - noncurrent		(805)	(1,152)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position		(893)	(1,251)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Net loss (gain)		(523)	(221)
Prior service credit		0	0
Pretax balance in AOCL at end of year		(523)	(221)
UNITED STATES
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		(545)	(2,585)
Non-US [Member]
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		(473)	(1,467)
Pension Plan, Excluding Plans with Plan Assets
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		(612)	(758)
Other Postretirement Benefit Plans, Excluding Plans with Plan Assets
Defined Benefit Plan, Funded Status [Abstract]
Defined Benefit Plan, Funded (Unfunded) Status of Plan		$ (893)	$ (1,251)