SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Other significant accounting policies) $ in Millions	Jun. 30, 2018 USD ($)
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	$ (8)
Accumulated Other Comprehensive Income
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	(576)
Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	568
Accounting Standards Update - Recognition and Measurement of Financial Assets and Financial Liabilities | Accumulated Other Comprehensive Income
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	(824)
Accounting Standards Update - Recognition and Measurement of Financial Assets and Financial Liabilities | Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	824
Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	248
Accounting Standards Update - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income | Retained Earnings
Summary of Significant Accounting Policies [Line Items]
Cumulative effect of change in accounting principle	$ (248)