INCOME TAXES (Details - Narrative) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Effective tax rates on income from continuing operations (as a percent)	20.00%	22.10%	59.90%
U.S. federal income tax at statutory rate (as a percent)	21.00%	21.00%	21.00%
Tax effect of Majority Interest Fortitude Sale	$ 180	$ 21	$ 0
Effect of foreign operations and global intangible low-taxes income		82
Valuation allowance related to certain tax attribute carryforward	150
Charges related to accrual of income tax interest	67	96	83
Share-based compensation payments excess tax effect	35	27	(13)
Reclassifications from accumulated other comprehensive income	(101)	(113)	(72)
Uncertain tax positions	165	258	176
Effect of foreign operations	76	82	65
Tax exempt income	58	65	75
Non-deductible transfer pricing charges	11	15	29
Tax charges and related interest from increase in uncertain tax positions from local and state		37
Impact of Tax Act	0	0	62
Unrecognized deferred tax liabilities	100
Tax credit carryforwards foreign	150
Net deferred tax assets (liabilities)	12,390	12,931
Deferred tax asset valuation allowance	1,330	1,427
Unrecognized Tax Benefits	2,343	4,762	4,709	$ 4,707
Unrecognized tax benefits, if recognized would favorably affect the effective tax rate	2,300	4,700	4,700
Unrecognized tax benefits, if recognized would not affect the effective tax rate	44	43	38
Decrease in unrecognized tax benefits is reasonably possible in the next twelve months	1,200
Unrecognized tax benefits, interest and penalties accrued	286	2,400	2,200
Unrecognized tax benefits, interest net of the federal (benefit) expense and penalties	(128)	(236)	(190)
Foreign and state
Income Tax Disclosure [Line Items]
Deferred tax asset valuation allowance recognized	(221)	$ 44	21
Foreign and state | European and Japan
Income Tax Disclosure [Line Items]
Deferred tax asset valuation allowance recognized	(215)
Tax Year 1991-2006
Income Tax Disclosure [Line Items]
Uncertain tax positions	379
Unrecognized tax benefits, interest and penalties accrued	2,200
Fortitude [Member]
Income Tax Disclosure [Line Items]
Tax effect of Majority Interest Fortitude Sale	$ 186
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income | Restatement Adjustment [Member]
Income Tax Disclosure [Line Items]
Assets Net			(248)
Retained Earnings | Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income | Restatement Adjustment [Member]
Income Tax Disclosure [Line Items]
Assets Net			$ 248