GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	$ 1,418		$ 1,418		$ 1,377
Intangible assets, Accumulated Amortization	(428)		(428)		(393)
Amortizing intangible assets, Net	990		990		984
Amortization expense	17	$ 20	36	$ 41
Remainder of 2016	36		36
Future Amortization Expense, 2017	69		69
Future Amortization Expense, 2018	65		65
Future Amortization Expense, 2019	65		65
Future Amortization Expense, 2020	65		65
Future Amortization Expense, 2021	58		58
Future Amortization Expense, Thereafter	396		396
Future Amortization Expense, Total	754		754
Intangible Assets Not Subject to Amortization - Tradenames [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	235		235		235
Amortizing intangible assets, Net	235		235		235
Intangible Assets Not Subject to Amortization - Other [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	1		1		1
Amortizing intangible assets, Net	1		$ 1		1
Customer-related intangibles [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			18 years
Intangible assets, Cost	977		$ 977		936
Intangible assets, Accumulated Amortization	(322)		(322)		(296)
Amortizing intangible assets, Net	655		$ 655		640
Noncompete Agreements [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			6 years
Intangible assets, Cost	6		$ 6		6
Intangible assets, Accumulated Amortization	(3)		(3)		(3)
Amortizing intangible assets, Net	3		$ 3		3
Technology [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			18 years
Intangible assets, Cost	93		$ 93		93
Intangible assets, Accumulated Amortization	(38)		(38)		(35)
Amortizing intangible assets, Net	55		$ 55		58
Other [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			9 years
Intangible assets, Cost	106		$ 106		106
Intangible assets, Accumulated Amortization	(65)		(65)		(59)
Amortizing intangible assets, Net	41		$ 41		47
Total Amortizing Intangible Assets [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			18 years
Intangible assets, Cost	1,182		$ 1,182		1,141
Intangible assets, Accumulated Amortization	(428)		(428)		(393)
Amortizing intangible assets, Net	$ 754		$ 754		$ 748