EQUITY (Accumulated balances related to each component of other comprehensive income/(loss)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Equity [Abstract]
Derivatives qualifying as effective hedges	$ 9	$ 36
Pension and other postretirement benefits	(3,023)	(2,905)
Available for sale securities	65	62
Foreign currency translation	(253)	(238)
Accumulated other comprehensive income (loss)	(3,202)	(3,045)
Other Comprehensive Income/(Loss), Net of Tax [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized holding gains, After tax	9	24	15
Derivatives qualifying as cash flow hedges - Realized gains, After tax	(36)	32	(5)
Derivatives qualifying as cash flow hedges, After tax	(27)	56	10
Pension and other postretirement benefits - Actuarial losses, After tax	(311)	(830)	(88)
Pension and other postretirement benefits - Amortization, After tax	90	81	67
Pension and other postretirement benefits - Settlements and curtailments	103	7	16
Pension and other postretirement benefits, After tax	(118)	(742)	(5)
Available for sale securities - Unrealized gains, After tax	12	28	44
Available for sale securities - Realized gains, After tax	(9)
Available for sale securities, After tax	3
Foreign currency translation	(15)	(16)	121
Total Other Comprehensive Income/(Loss)	(157)	(674)	170
Other Comprehensive Income/(Loss), Pre-Tax [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized gains - Pre-tax	26	28	18
Derivatives qualifying as cash flow hedges - Realized gains, Pre-tax	(56)	52	(10)
Derivatives qualifying as cash flow hedges, Pre-tax	(30)	80	8
Pension and other postretirement benefits - Actuarial losses, Pre-tax	(432)	(1,251)	(154)
Pension and other postretirement benefits - Amortization, Pre-tax	133	115	102
Pension and other postretirement benefits - Settlements and curtailments, Pre-tax	159	11	25
Pension and other postretirement benefits, Pre-tax	(140)	(1,125)	(27)
Available for sale securities - Unrealized gains, Pre-tax	20	35	47
Available for sale securities - Realized gains, Pre-tax	(11)
Available for sale securities, Pre-tax	9
Foreign currency translation, Pre-tax	(15)	(16)	121
Other comprehensive income/(loss), Pre-tax	(176)	(1,026)	149
Other Comprehensive Income/(Loss), Tax [Abstract]
Derivatives qualifying as cash flow hedges - Unrealized gains, Tax	(17)	(4)	(3)
Derivatives qualifying as cash flow hedges - Realized gains, Tax	20	(20)	5
Derivatives qualifying as cash flow hedges, Tax	3	(24)	2
Pension and other postretirement benefits - Actuarial losses, Tax	(121)	(421)	(66)
Pension and other postretirement benefits - Amortization, Tax	43	34	35
Pension and other postretirement benefits - Settlements and curtailments, Tax	56	4	9
Pension and other postretirement benefits, Tax	22	383	22
Available for sale securities - Unrealized holding gains, Tax	(8)	(7)	(3)
Available for sale securities - Realized holding gains, Tax	2
Available for sale securities, Tax	(6)
Other comprehensive income/(loss), Tax	$ 19	$ 352	$ 21