SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Lease Expense) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Accounting Policies [Abstract]
Operating lease fixed cost	$ 114	$ 236
Operating lease variable cost	490	799
Total operating lease costs	$ 604	$ 1,035