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ASSETS HELD FOR SALE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
ASSETS HELD FOR SALE (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets held for sale			$ 3	$ 4
Gain from discontinued operations, net of income tax	$ 0	$ 7	0	$ 7
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net book value of assets	$ 3		3
Impairment of assets held for sale			$ 3
Contribution of cash to subsidiary					$ 12

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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