DISPOSITIONS AND ACQUISITIONS (Net Income (Loss) from Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal									$ (198)	$ 0	$ 0
Net (loss) income from discontinued operations	$ (2)	$ (6)	$ (181)	$ (4)	$ (4)	$ 25	$ 29	$ 41	(193)	91	277
Eliminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (loss) income from discontinued operations									(39)	0	0
TF Holdings Limited | Disposed of by Sale, Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues									959	1,270	1,437
Production and delivery costs									833	852	782
Depreciation, depletion and amortization									80	257	228
Interest expense allocated from parentc									39	28	24
Other costs and expenses, net									10	26	27
(Loss) income before income taxes and loss on disposal									(3)	107	376
Loss on disposal									(198)	0	0
Net (loss) income before income taxes									(201)	107	376
Benefit from (provision for) income taxes									8	(16)	(99)
Net (loss) income from discontinued operations									(193)	91	277
TF Holdings Limited | Disposed of by Sale, Discontinued Operations | Eliminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues									$ 157	$ 114	$ 121