SEGMENT FINANCIAL DATA 2 (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	$ 1,775	$ 1,848
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(90)	(73)
Repositioning and other charges	(141)	(62)
Income before taxes	1,861	1,935
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(90)	(73)
Stock compensation expense	(77)	(44)
Repositioning and other charges	(141)	(62)
Other	101	55
Income before taxes	1,861	1,935
Segment Reconciling Items [Member] \| Pension [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	276	198
Segment Reconciling Items [Member] \| Other Postretirement [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension ongoing income	17	13
Corporate
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Total segment profit	(29)	(41)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Repositioning and other charges	$ (46)	$ 1

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