ACCOUNTING AND DISCLOSURE CHANGES Recently Adopted Accounting Disclosure Changes (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU asset obtained in exchange for lease obligations	$ 59
Operating lease liability	$ 64
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU asset obtained in exchange for lease obligations		$ 66
Operating lease liability		$ 66