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, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3,097	$ 3,173	$ 3,543
Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	346	354
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,002	2,072
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	749	747	746
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	242	174
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	0	1
Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	242	173
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	544	622
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	346	353
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	192	264
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	5	4
U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	252	272
U.S. equity | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	235	237
U.S. equity | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17	35
U.S. equity | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. equity - developed countries
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	165	207
Non-U.S. equity - developed countries | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	67	71
Non-U.S. equity - developed countries | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	98	136
Non-U.S. equity - developed countries | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging markets
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	129	140
Emerging markets | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43	45
Emerging markets | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	80	90
Emerging markets | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	5
Convertible bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1
Convertible bonds | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1
Convertible bonds | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Convertible bonds | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Equity derivatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(3)	3
Equity derivatives | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(3)	3
Equity derivatives | 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	1,498	1,552
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	1,421	1,501
Fixed Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77	51	33
U.S. government and municipalities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	838	574
U.S. government and municipalities | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	838	574
U.S. government and municipalities | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. agency mortgage backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	50	56
U.S. agency mortgage backed securities | 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 mortgage backed securities | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	50	56
U.S. agency mortgage backed securities | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporates - investment grade
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	423	677
Corporates - investment grade | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporates - investment grade | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	423	677
Corporates - investment grade | 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
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	5
Non-U.S. governments - developed countries | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	5
Non-U.S. governments - developed countries | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Non-U.S. corporates - developed countries
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	81	146
Non-U.S. corporates - developed countries | 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. corporates - developed countries | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	81	146
Non-U.S. corporates - developed countries | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Emerging markets debt
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	12
Emerging markets debt | 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 markets debt | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	12
Emerging markets debt | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other asset-backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	13
Other asset-backed securities | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33	13
Other asset-backed securities | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77	51
Other fixed income funds | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other fixed income funds | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	77	51
Fixed income derivatives
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(16)	15
Fixed income derivatives | 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 derivatives | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(16)	15
Fixed income derivatives | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
High yield bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	3
High yield bonds | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	3
High yield bonds | 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	807	783
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	160	114
Alternative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	647	669	$ 687
Real estate
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	329	284
Real estate | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real estate | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	329	284
Private equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	214	220
Private equity | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Private equity | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	214	220
Absolute return
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	264	279
Absolute return | 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 | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	160	114
Absolute return | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	104	165
Total other securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	42
Total other securities | Quoted Prices in Active Markets for Identical Items (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Total other securities | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(13)	20
Total other securities | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 19	$ 22