OTHER COMPREHENSIVE INCOME Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax (expense)/benefit		$ (128)	$ (130)	$ (234)	$ (219)
Earnings (Loss) From Continuing Operations		286	430	712	792
Total reclassifications for the period		(40)	(87)	443	(153)
Prior-service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(3)	(3)	(6)	(7)
Actuarial gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(50)	(110)	(102)	(194)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(53)	(113)	(108)	(201)
Tax (expense)/benefit		13	28	27	50
Earnings (Loss) From Continuing Operations		(40)	(85)	(81)	(151)
Income (Loss) from Continuing Operations, Total, Net of Tax		(40)	(85)	446	(151)
Defined Benefit Pension and Postretirement Items (a)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax cut and jobs act reclassification from AOCI to retained earnings pension and postretirement benefit plans, before tax		0	0	527	0
Total reclassifications for the period		(40)	(85)	(81)	(151)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	0	0	(4)	(2)
Tax (expense)/benefit		0	0	0	0
Earnings (Loss) From Continuing Operations		0	0	(4)	(2)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		0	(4)	(1)	(1)
Tax (expense)/benefit		0	2	0	1
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Foreign Exchange Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3]	0	(4)	(1)	(1)
Net Gains and Losses on Cash Flow Hedging Derivatives (a)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (Loss) From Continuing Operations		0	(2)	(1)	0
Tax cuts and jobs act reclassification from AOCI to retained earnings, derivatives, before tax		0	0	2	0
Income (Loss) from Continuing Operations, Total, Net of Tax		0	(2)	1	0
Total reclassifications for the period		$ 0	$ (2)	$ (1)	$ 0

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 19 for additional details).

[2] Amounts for the three months and six months ended June 30, 2018 were reclassified to Discontinued operations, net of taxes.

[3] This accumulated other comprehensive income component is included in our derivatives and hedging activities (see Note 18 for additional details).