PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Basis of Fair Value Measurements of Pension Plan Assets) (Details) - Defined Benefit Pension Plans [Member] - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3,173	$ 3,543	$ 3,586
Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	354	569
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,072	2,228
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	747	746	661
Other Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	19
Other Securities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20	(3)
Other Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22	22
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	174	134
Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	3
Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	173	131
Cash and Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	622	869
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	353	566
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	264	299
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	4	2
U.S. Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	272	439
U.S. Equity [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	237	360
U.S. Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35	78
U.S. Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Non-U.S. Equity - Developed Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	207	326
Non-U.S. Equity - Developed Countries [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	71	166
Non-U.S. Equity - Developed Countries [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	136	160
Non-U.S. Equity - Developed Countries [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging Markets Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	140	105
Emerging Markets Equity [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	45	40
Emerging Markets Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	90	62
Emerging Markets Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	3
Equity Derivatives [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	(1)
Equity Derivatives [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Equity Derivatives [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	(1)
Equity Derivatives [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,552	1,708
Fixed Income Securities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,501	1,675
Fixed Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	51	33	14
U.S. government and municipalities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	574	673
U.S. government and municipalities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. government and municipalities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	574	673
U.S. government and municipalities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. agency and agency mortgage backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	56	66
U.S. agency and agency mortgage backed securities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. agency and agency mortgage backed securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	56	66
U.S. agency and agency mortgage backed securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate Bonds - Investment Grade [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	677	743
Corporate Bonds - Investment Grade [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate Bonds - Investment Grade [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	677	743
Corporate Bonds - Investment Grade [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Governments - Developed Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	6
Non-U.S. Governments - Developed Countries [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Governments - Developed Countries [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5	6
Non-U.S. Governments - Developed Countries [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Corporate Bonds - Developed Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	146	160
Non-U.S. Corporate Bonds - Developed Countries [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. Corporate Bonds - Developed Countries [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	146	160
Non-U.S. Corporate Bonds - Developed Countries [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging Market Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	14
Emerging Market Debt [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging Market Debt [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	14
Emerging Market Debt [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13	12
Other Asset-backed Securities [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Asset-backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13	11
Other Asset-backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	1
Other Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	51	32
Other Fixed Income Funds [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Fixed Income Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Fixed Income Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	51	32
High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	2
High Yield Bonds [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
High Yield Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3	2
High Yield Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Alternative Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	783	813
Alternative Investments [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Alternative Investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	114	126
Alternative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	669	687	$ 623
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	284	288
Real Estate [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real Estate [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	284	288
Private Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	220	233
Private Equity [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Private Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Private Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	220	233
Absolute Return [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	279	292
Absolute Return [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Absolute Return [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	114	126
Absolute Return [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 165	$ 166