SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jan. 01, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Present value of lease liabilities	$ 135
Operating lease assets	$ 129
Accounting Standards Update 2016-02
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Present value of lease liabilities		$ 165
Operating lease assets		155
Impact of adoption of ASU 2016-02		8
Accounting Standards Update 2016-02 | Retained Earnings
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Impact of adoption of ASU 2016-02		$ 8