SEGMENT FINANCIAL DATA 2 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	$ 1,793	$ 1,553	$ 5,361	$ 4,786
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(90)	(101)	(263)	(264)
Repositioning and other charges	(96)	(144)	(338)	(486)
Income before taxes	1,700	1,148	5,442	4,302
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(90)	(101)	(263)	(264)
Stock compensation expense	(56)	(40)	(172)	(118)
Repositioning and other charges	(96)	(144)	(338)	(486)
Other	(130)	(330)	(8)	(249)
Income before taxes	1,700	1,148	5,442	4,302
Segment Reconciling Items [Member] | Pension [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	261	197	809	593
Segment Reconciling Items [Member] | Other Postretirement [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	18	13	53	40
Corporate
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	(72)	(7)	(155)	(73)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Repositioning and other charges	$ (48)	$ (33)	$ (126)	$ (77)