PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Pension Contributions			$ 836	$ 712
Defined Benefit Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	95	88	285	260
Interest cost	274	282	822	842
Expected return on plan assets	(316)	(329)	(948)	(978)
Amortization of prior service cost	6	7	19	21
Amortization of net loss	130	94	390	280
Net periodic benefit cost	189	142	568	425
Other Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	4	4	12	10
Interest cost	23	25	69	75
Expected return on plan assets	0	(1)	0	(3)
Amortization of prior service cost	(1)	0	(3)	0
Net periodic benefit cost	$ 26	$ 28	$ 78	$ 82