SEGMENTS AND GEOGRAPHIC REGIONS EBIT Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting [Abstract]
Income (loss) from continuing operations, net of tax	$ (2,310)	$ 347	$ 90	$ 156	$ 491	$ 714	$ 810	$ 925	$ (1,717)	$ 2,940	$ (1,287)
Provision for income taxes on continuing operations									470	809	1,524
Income (loss) from continuing operations before income taxes									(1,247)	3,749	237
Interest income									81	82	66
Interest expense and amortization of debt discount									933	1,063	914
Pro Forma Adjustments									65	180	1,120
Other Nonrecurring (Income) Expense									(4,682)	(1,326)	(3,372)
Pro Forma Operating EBIT									$ 4,352	$ 6,236	$ 5,577