SUPPLEMENTARY DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information

Selected unaudited quarterly consolidated financial data are shown below:

	2018
(in millions, except per share amounts)	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenue	$	1,995		$	2,128		$	2,136		$	2,121
Expenses	4,276			2,373			2,019			2,096
Operating (loss) income	$	(2,281	)	$	(245	)	$	117		$	25
Net loss attributable to Bausch Health Companies Inc.	$	(2,581	)	$	(873	)	$	(350	)	$	(344	)
Loss per share attributable to Bausch Health Companies Inc.:
Basic	$	(7.36	)	$	(2.49	)	$	(1.00	)	$	(0.98	)
Diluted	$	(7.36	)	$	(2.49	)	$	(1.00	)	$	(0.98	)
Net cash provided by operating activities	$	438		$	222		$	522		$	319

	2017
(in millions, except per share amounts)	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
Revenue	$	2,109	$	2,233		$	2,219	$	2,163
Expenses	1,898		2,058			2,181		2,485
Operating income (loss)	$	211	$	175		$	38	$	(322	)
Net income (loss) attributable to Bausch Health Companies Inc.	$	628	$	(38	)	$	1,301	$	513
Earnings (loss) per share attributable to Bausch Health Companies Inc.:
Basic	$	1.80	$	(0.11	)	$	3.71	$	1.46
Diluted	$	1.79	$	(0.11	)	$	3.69	$	1.45
Net cash provided by operating activities	$	954	$	268		$	490	$	578