INCOME TAXES - Narrative (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
	Aug. 08, 2017	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017
Schedule Of Income Taxes [Line Items]
Income taxes benefits		$ 205		$ 73	$ 1,129	$ 66
Income tax benefit on ordinary income					155
Income tax benefit for discrete items					974
Deferred tax asst on outside basis difference					1,863
Income tax charge for internal restructuring transactions					635
Income tax charge for divestitures					234
Gain on reversal of deferred tax liability			$ 361
Deferred tax asset on investment							$ 1,543
Increase in deferred tax asset on investment		320
Valuation allowance against deferred tax assets		2,113	1,857		2,113
Unrecognized tax benefits including interest and penalties		499	423		499
Unrecognized tax benefits related to interest and penalties		42	$ 39		42
Portion of unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate		$ 262			$ 262
Foreign
Schedule Of Income Taxes [Line Items]
Income taxes benefits						$ 66
Foreign | Australian Tax Office | Subsequent Event
Schedule Of Income Taxes [Line Items]
Assessment including penalties and interest	$ 117