PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Pension Contributions			$ 499	$ 282
Defined Benefit Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	95	86	190	172
Interest cost	274	282	548	560
Expected return on plan assets	(316)	(326)	(632)	(649)
Amortization of prior service cost	6	7	13	14
Amortization of net loss	130	94	260	186
Net periodic benefit cost	189	143	379	283
Other Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	4	3	8	6
Interest cost	23	25	46	50
Expected return on plan assets	0	(1)	0	(2)
Amortization of prior service cost	(1)	0	(2)	0
Net periodic benefit cost	$ 26	$ 27	$ 52	$ 54