GENERAL INFORMATION AND OTHER FINANCIAL DATA - EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Income from continuing operations, net of income tax	$ 560	$ 330
(Earnings) losses attributable to noncontrolling interests	(32)	24
Mandatory convertible preferred stock dividends	(36)	(28)
Earnings from continuing operations attributable to common shares	492	326
(Loss) income from discontinued operations, net of income tax	(42)	28
(Losses) earnings from discontinued operations attributable to common shares	(51)	21
Earnings attributable to common shares	$ 441	$ 347
Weighted-average common shares outstanding for basic EPS	274,674,000	257,932,000
Dilutive effect of stock options, RSAs and RSUs (in shares)	969,000	933,000
Dilutive effect of common stock forward shares (in shares)	1,585,000	625,000
Weighted-average common shares outstanding for diluted EPS (in shares)	277,228,000	259,490,000
Earnings from continuing operations attributable to common shares (in usd per share)	$ 1.79	$ 1.26
(Losses) earnings from discontinued operations attributable to common shares (in usd per share)	(0.19)	0.08
Earnings attributable to common shares (in usd per share)	1.60	1.34
Earnings from continuing operations attributable to common shares (in usd per share)	1.78	1.25
(Losses) earnings from discontinued operations attributable to common shares (in usd per share)	(0.19)	0.08
Earnings from continuing operations attributable to common shares (n usd per share)	$ 1.59	$ 1.33
Vested RSUs included in basic WASO (in shares)	613,000	628,000
Non-qualified stock options granted (in shares)	261,075
Convertible Preferred Stock [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Antidilutive securities excluded from earnings per share (in shares)	18,601,085	15,592,572
Stock options, RSAs and RSUs [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Antidilutive securities excluded from earnings per share (in shares)	316,385	80,449
Employee Stock Option [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Exercisable period	3 years
Performance-based RSUs [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Equity awards, granted (in shares)	384,373
Service-based RSUs [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Equity awards, granted (in shares)	214,502