EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income from continuing operations, net of tax	$ (217)	$ 90	$ 41	$ 246
Net income attributable to noncontrolling interests - continuing operations	8	15	27	47
Net income attributable to participating securities - continuing operations 1	2	2	4	2
Income (loss) from continuing operations attributable to common stockholders	(227)	73	10	197
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	445
Net income attributable to noncontrolling interests - discontinued operations	0	0	0	13
Income from discontinued operations attributable to common stockholders	0	0	0	432
Net income (loss) attributable to common stockholders	$ (227)	$ 73	$ 10	$ 629
Earnings (loss) per common share from continuing operations - basic	$ (0.31)	$ 0.10	$ 0.01	$ 0.26
Earnings per common share from discontinued operations - basic	0	0	0	0.58
Earnings (loss) per common share - basic	(0.31)	0.10	0.01	0.84
Earnings (loss) per common share from continuing operations - diluted	(0.31)	0.10	0.01	0.26
Earnings per common share from discontinued operations - diluted	0	0	0	0.58
Earnings (loss) per common share - diluted	$ (0.31)	$ 0.10	$ 0.01	$ 0.84
Weighted-average common shares outstanding - basic	739.3	742.8	739.7	745.0
Dilutive effect of equity compensation plans	0.0	5.1	1.3	2.6
Weighted-average common shares outstanding - diluted	739.3	747.9	741.0	747.6
Stock options and restricted stock units excluded from EPS calculations	27.7	6.4	17.3	3.2