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, 2011	Dec. 31, 2010
Prior sevice credit (cost):
Net amount recorded during the year		$ 34
Pension
Defined Benefit Plan Disclosure [Line Items]
Net amount, beginning	(1,258)	(1,080)
Net actuarial gain (loss):
Net actuarial gain (loss) arising during the year, including foreign currency exchange rate changes	(837)	(250)
Amortization of net actuarial loss	140	61
Net actuarial gain (loss), taxes	240	1
Net actuarial gain (loss), net of tax	(457)	(188)
Prior sevice credit (cost):
Prior service credit (cost) arising during the year	14	(9)
Amortization of prior service (credit) cost	23	23
Prior service credit (cost), taxes	(15)	(4)
Prior service credit (cost), net of tax	22	10
Net amount recorded during the year	(435)	(178)
Net amount, end	(1,693)	(1,258)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net amount, beginning	45	24
Net actuarial gain (loss):
Net actuarial gain (loss) arising during the year, including foreign currency exchange rate changes	(22)	78
Amortization of net actuarial loss	13	11
Net actuarial gain (loss), taxes	3	(67)
Net actuarial gain (loss), net of tax	(6)	22
Prior sevice credit (cost):
Prior service credit (cost) arising during the year	116	7
Amortization of prior service (credit) cost	(22)	(21)
Prior service credit (cost), taxes	(34)	13
Prior service credit (cost), net of tax	60	(1)
Net amount recorded during the year	54	21
Net amount, end	$ 99	$ 45