PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Change in Projected Benefit Obligations, Plan Assets and Funded Status of All Significant Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amortization of Net Gains (Losses)	$ (547)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	26
Defined Benefit Plan, Change in Benefit Obligations [Roll Forward]
Benefit Obligations, Beginning Balance	21,158	19,914
Service cost	347	309	270
Interest cost	1,121	1,098	1,081
Plan participants' contributions	31	22
Amendments	0	2
Actuarial changes in assumptions and experience	1,562	1,133
Acquisition/divestiture/other activity	(20)	(53)
Benefits paid	(1,277)	(1,148)
Currency impact	(129)	(86)
Termination benefits/curtailment cost	(30)	(33)
Benefit Obligations, Ending Balance	22,763	21,158	19,914
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	15,851	14,589
Actual return on plan assets	853	1,724
Currency impact	(121)	(28)
Employer contributions	806	708
Plan participants' contributions	31	22
Acquisition/divestiture/other activity	(24)	(16)
Benefits paid	(1,277)	(1,148)
Fair value of plan assets, ending balance	16,119	15,851	14,589
Funded status at end of year	(6,644)	(5,307)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Noncurrent assets	366	235
Current liabilities	(64)	(58)
Noncurrent liabilities	(6,946)	(5,484)
Net amounts recognized in the consolidated balance sheets	(6,644)	(5,307)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net loss (gain)	8,335	6,696
Prior service cost (credit)	154	182
Pretax balance in AOCI at end of year	8,489	6,878
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amortization of Net Gains (Losses)	(2)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	(4)
Defined Benefit Plan, Change in Benefit Obligations [Roll Forward]
Benefit Obligations, Beginning Balance	2,095	2,079
Service cost	15	15	16
Interest cost	100	111	138
Plan participants' contributions	0	0
Amendments	0	0
Actuarial changes in assumptions and experience	20	68
Acquisition/divestiture/other activity	16	(1)
Benefits paid	(154)	(180)
Currency impact	(4)	3
Termination benefits/curtailment cost	0	0
Benefit Obligations, Ending Balance	2,088	2,095	2,079
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning balance	238	367
Actual return on plan assets	6	17
Currency impact	0	0
Employer contributions	(16)	(60)
Plan participants' contributions	0	0
Acquisition/divestiture/other activity	0	0
Benefits paid	(74)	(86)
Fair value of plan assets, ending balance	154	238	367
Funded status at end of year	(1,934)	(1,857)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Noncurrent assets	0	0
Current liabilities	(82)	(88)
Noncurrent liabilities	(1,852)	(1,769)
Net amounts recognized in the consolidated balance sheets	(1,934)	(1,857)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net loss (gain)	(7)	(26)
Prior service cost (credit)	(15)	(16)
Pretax balance in AOCI at end of year	$ (22)	$ (42)