SEGMENT FINANCIAL DATA 2 (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	$ 1,553	$ 1,928	$ 4,786	$ 5,707
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(101)	(96)	(264)	(266)
Repositioning and other charges	(144)	(96)	(486)	(306)
Income before taxes	1,148	1,967	4,302	5,791
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(101)	(96)	(264)	(266)
Stock compensation expense	(40)	(37)	(118)	(112)
Repositioning and other charges	(144)	(96)	(486)	(306)
Other	(330)	106	(249)	284
Income before taxes	1,148	1,967	4,302	5,791
Segment Reconciling Items [Member] \| Pension [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	197	150	593	449
Segment Reconciling Items [Member] \| Other Postretirement [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	13	12	40	35
Corporate
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	(7)	(54)	(73)	(202)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Repositioning and other charges	$ (33)	$ (22)	$ (77)	$ (123)

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