SEGMENT FINANCIAL DATA 2 (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Segment Reporting Segment Profit Loss	$ 7,212	$ 6,665	$ 7,739
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest and other financial charges	(343)	(359)	(357)
Repositioning and other charges	(569)	(575)	(546)
Income before taxes	7,235	6,012	7,559
Other Postretirement Benefits [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Benefit plans income/(expense)	71	58	48
Corporate and All Other [Member]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Segment Reporting Segment Profit Loss	(226)	(96)	(256)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Repositioning and other charges	(202)	(110)	(241)
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Pension mark-to-market expense	(40)	(44)	(123)
Other income (expense)	38	(349)	360
Interest and other financial charges	(343)	(359)	(357)
Stock compensation expense	(217)	(168)	(153)
Repositioning and other charges	(569)	(575)	(546)
Income before taxes	7,235	6,012	7,559
Segment Reconciling Items [Member] \| Pension Plan [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Benefit plans income/(expense)	1,083	785	592
Segment Reconciling Items [Member] \| Other Postretirement Benefits [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Benefit plans income/(expense)	$ 71	$ 57	$ 47

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