EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income from continuing operations, net of tax	$ (1)	$ 347	$ 40	$ 593
Net income attributable to noncontrolling interests - continuing operations	24	14	51	61
Net income attributable to participating securities - continuing operations 1	3	2	7	4
Income (loss) from continuing operations attributable to common stockholders	(28)	331	(18)	528
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	$ (28)	$ 331	$ (18)	$ 960
Earnings (loss) per common share from continuing operations - basic	$ (0.04)	$ 0.45	$ (0.02)	$ 0.71
Earnings per common share from discontinued operations - basic	0	0	0	0.58
Earnings (loss) per common share - basic	(0.04)	0.45	(0.02)	1.29
Earnings (loss) per common share from continuing operations - diluted	(0.04)	0.45	(0.02)	0.71
Earnings per common share from discontinued operations - diluted	0	0	0	0.58
Earnings (loss) per common share - diluted	$ (0.04)	$ 0.45	$ (0.02)	$ 1.29
Weighted-average common shares outstanding - basic	740.5	739.8	740.0	743.3
Dilutive effect of equity compensation plans	0.0	3.2	0.0	2.8
Weighted-average common shares outstanding - diluted	740.5	743.0	740.0	746.1
Stock options and restricted stock units excluded from EPS calculations	26.9	12.9	27.1	6.4