PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Changes in Amounts Included in Cumulative Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Pension
Defined Benefit Plan Disclosure [Line Items]
Net amount, beginning	$ (1,693)	$ (1,258)
Net actuarial gain (loss):
Net actuarial loss arising during the year, including foreign currency exchange rate changes	(637)	(837)
Amortization of net actuarial loss	175	140
Taxes	193	240
Net actuarial gain (loss), net of tax	(269)	(457)
Prior sevice credit (cost):
Prior service credit (cost) arising during the year	(12)	14
Amortization of prior service (credit) cost	8	23
Taxes	1	(15)
Prior service credit (cost), net of tax	(3)	22
Net amount recorded during the year	(272)	(435)
Net amount, end	(1,965)	(1,693)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net amount, beginning	99	45
Net actuarial gain (loss):
Net actuarial loss arising during the year, including foreign currency exchange rate changes	0	(22)
Amortization of net actuarial loss	13	13
Taxes	(2)	3
Net actuarial gain (loss), net of tax	11	(6)
Prior sevice credit (cost):
Prior service credit (cost) arising during the year	(43)	116
Amortization of prior service (credit) cost	(127)	(22)
Taxes	50	(34)
Prior service credit (cost), net of tax	(120)	60
Net amount recorded during the year	(109)	54
Net amount, end	$ (10)	$ 99