SEGMENT FINANCIAL DATA (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss	$ 8,190	$ 7,690	$ 7,186
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Interest and other financial charges	(367)	(316)	(338)
Stock compensation expense	(175)	(176)	(176)
Repositioning and other charges	(1,091)	(973)	(690)
Income before taxes	7,487	6,950	6,452
Other Postretirement Benefits for Significant Plans [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Benefit plans income/(expense)	34	26	34
Corporate [Member]
Reconciliation of segment profit to consolidated [Abstract]
Segment Reporting Segment Profit Loss	(281)	(306)	(218)
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Repositioning and other charges	(502)	(494)	(267)
Material Reconciling Items [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Pension mark-to-market expense	(37)	(87)	(273)
Other income (expense)	57	(78)	(118)
Interest and other financial charges	(367)	(316)	(338)
Stock compensation expense	(175)	(176)	(184)
Repositioning and other charges	(1,091)	(973)	(690)
Income before taxes	7,487	6,950	6,452
Material Reconciling Items [Member] | Pension Plans, Defined Benefit [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Benefit plans income/(expense)	992	713	601
Material Reconciling Items [Member] | Other Postretirement Benefits for Significant Plans [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Benefit plans income/(expense)	$ 32	$ 21	$ 32