INCOME TAXES (Details - Assessment of Deferred Tax Asset (liabilities) Valuation Allowance) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
	Feb. 26, 2009	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets, Liabilities [Line Items]
Change in valuation allowance		$ (21)	$ 5	$ 7	$ 30	$ 40	$ 24	$ (8)	$ (13)
Continuing operations										$ 21	$ 43	$ 83
Deferred tax asset valuation allowance related to tax attributes that expired										0
Net deferred tax assets (liabilities) on a U.S. GAAP basis
Valuation allowance		(1,780)				(1,374)				(1,780)	(1,374)
Net deferred tax assets (liabilities)		15,052				13,813				15,052	13,813
Net foreign, state & local deferred tax assets		16,832				15,187				16,832	15,187
Net U.S, foreign, state & local deferred tax assets		15,221				14,033				15,221	14,033
Net foreign, state & local deferred tax liabilities		(2,852)				(4,464)				(2,852)	(4,464)
Deferred tax asset - U.S. consolidated income tax group
Deferred Tax Assets, Liabilities [Line Items]
Change in valuation allowance										14,600	13,400
Continuing operations										0
Deferred tax asset valuation allowance recognized related to certain state, local and foreign jurisdictions										0
Net deferred tax assets (liabilities) on a U.S. GAAP basis
Net U.S. consolidated return group deferred tax assets		15,479				15,603				15,479	15,603
Net deferred tax assets (liabilities) in Accumulated other comprehensive income		(510)				(2,070)				(510)	(2,070)
Valuation allowance		(405)				(86)				(405)	(86)
Net deferred tax assets (liabilities)		14,564				13,447				14,564	13,447
Refund of taxes, interest and penalties sought	$ 306
Deferred tax liability - foreign, state and local
Net deferred tax assets (liabilities) on a U.S. GAAP basis
Valuation allowance		(1,374)				(1,288)				(1,374)	(1,288)
Net deferred tax assets (liabilities)		488				366				488	366
Net foreign, state & local deferred tax assets		2,031				1,874				2,031	1,874
Net deferred tax assets (liabilities)		657				586				657	586
Net foreign, state & local deferred tax liabilities		$ (169)				$ (220)				$ (169)	$ (220)