TRANSFORMATION STRATEGY (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Transformation cost		$ 360
Other transformation related costs	$ 71	262
Other expenses		98
Transformation strategy cost		$ 273

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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