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SEGMENT INFORMATION - Segment Revenues and Profit (Details) - USD ($) $ in Millions			3 Months Ended		6 Months Ended
	Jun. 08, 2021	May 26, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment reporting information
Revenues			$ 2,100	$ 1,664	$ 4,127	$ 3,676
Operating (loss) income			(270)	(27)	(491)	221
Amortization of intangible assets			(360)	(436)	(717)	(872)
Goodwill impairments			0	0	(469)	0
Asset impairments			(47)	(1)	(195)	(15)
Restructuring, integration and separation costs			(9)	(7)	(21)	(11)
Other expense, net			(542)	(118)	(512)	(154)
Interest income			2	2	4	9
Interest expense			(364)	(385)	(732)	(781)
Loss on extinguishment of debt	$ (38)	$ (27)	(45)	(27)	(50)	(51)
Foreign exchange and other			7	0	8	(13)
Loss before benefit from income taxes			(670)	(437)	(1,261)	(615)
Bausch + Lomb
Segment reporting information
Revenues			934	677	1,815	1,552
Salix
Segment reporting information
Revenues			516	404	988	881
International Rx
Segment reporting information
Revenues			313	249	619	540
Ortho Dermatologics
Segment reporting information
Revenues			137	117	278	248
Diversified Products
Segment reporting information
Revenues			200	217	427	455
Operating Segment
Segment reporting information
Revenues			2,100	1,664	4,127	3,676
Operating (loss) income			887	680	1,803	1,574
Operating Segment | Bausch + Lomb
Segment reporting information
Revenues			934	677	1,815	1,552
Operating (loss) income			213	124	452	387
Operating Segment | Salix
Segment reporting information
Revenues			516	404	988	881
Operating (loss) income			370	289	697	608
Operating Segment | International Rx
Segment reporting information
Revenues			313	249	619	540
Operating (loss) income			103	75	212	173
Operating Segment | Ortho Dermatologics
Segment reporting information
Revenues			137	117	278	248
Operating (loss) income			61	38	131	85
Operating Segment | Diversified Products
Segment reporting information
Revenues			200	217	427	455
Operating (loss) income			140	154	311	321
Corporate
Segment reporting information
Operating (loss) income			$ (199)	$ (145)	$ (380)	$ (301)

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