BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -Recently issued accounting pronouncements (Details) - Accounting Standards Update 2016-02 - Forecast $ in Millions	Jan. 01, 2019 USD ($)
Minimum
New Accounting Pronouncements or Change in Accounting Principle.
Right-to-use assets	$ 15
Lease liabilities	15
Maximum
New Accounting Pronouncements or Change in Accounting Principle.
Right-to-use assets	25
Lease liabilities	$ 25