PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income for All Significant Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended								3 Months Ended
	Dec. 31, 2013 Defined Benefit Pension Plans [Member]		Dec. 31, 2012 Defined Benefit Pension Plans [Member]	Dec. 31, 2011 Defined Benefit Pension Plans [Member]	Dec. 31, 2013 Other Postretirement Benefits [Member]	Dec. 31, 2012 Other Postretirement Benefits [Member]		Dec. 31, 2011 Other Postretirement Benefits [Member]	Dec. 31, 2013 4Q12 Restructuring [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 471		$ 378	$ 347	$ 19	$ 17		$ 15
Interest cost	1,012		1,093	1,121	78	92		100
Expected return on plan assets	(1,248)		(1,262)	(1,305)	0	(1)		(6)
Amortization of prior service cost (credit)	25		26	28	(4)	(4)		(1)
Amortization of unrecognized loss	788		519	374	4	1		1
Curtailment/settlement/other	5	[1]	0	(4)	0	9	[2]	0	9
Net periodic benefit cost	1,053		754	561	97	114		109
Net (gain) loss	(2,343)		3,135	2,009	(404)	163		20
Amortization of prior service (cost) credit	(25)		(26)	(28)	4	4		1
Amortization of unrecognized loss	(793)		(519)	(370)	(4)	(1)		(1)
Total recognized in other comprehensive (income) loss	(3,161)		2,590	1,611	(404)	166		20
Total recognized in net periodic benefit cost and other comprehensive (income) loss	$ (2,108)		$ 3,344	$ 2,172	$ (307)	$ 280		$ 129

[1] Included $9 million of curtailment costs recorded in 2012 related to the 4Q12 Restructuring plan (see Note 3).

[2] The 2013 impact primarily relates to settlements associated with the wind-up of a Canadian pension plan.