BASIS OF PRESENTATION Operating Leases (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 02, 2019	Jan. 01, 2019
Operating Leased Assets [Line Items]
Cumulative effect of change in accounting standards		$ 17	$ 5
Operating lease right-of-use assets	$ 732
Operating lease liabilities	$ 750
Accounting Standards Update 2016-02
Operating Leased Assets [Line Items]
Operating lease right-of-use assets			734
Operating lease liabilities			749
Retained Earnings
Operating Leased Assets [Line Items]
Cumulative effect of change in accounting standards		$ 12
Retained Earnings | Accounting Standards Update 2016-02
Operating Leased Assets [Line Items]
Cumulative effect of change in accounting standards			$ 12