INTANGIBLE ASSETS AND GOODWILL - Major Components of Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Finite-lived intangible assets:
Gross Carrying Amount	$ 25,586	$ 25,613
Accumulated Amortization and Impairments	(18,000)	(17,123)
Net Carrying Amount	7,586	8,490
Total intangible assets
Gross Carrying Amount	27,297	27,324
Net Carrying Amount	9,297	10,201
Acquired IPR&D not in service
Indefinite-lived intangible assets:
Net Carrying Amount	13	13
Bausch Lomb Trademark
Indefinite-lived intangible assets:
Net Carrying Amount	1,698	1,698
Product brands
Finite-lived intangible assets:
Gross Carrying Amount	21,011	21,011
Accumulated Amortization and Impairments	(14,315)	(13,544)
Net Carrying Amount	6,696	7,467
Bausch Lomb Trademark
Finite-lived intangible assets:
Gross Carrying Amount	918	930
Accumulated Amortization and Impairments	(368)	(338)
Net Carrying Amount	550	592
Product rights/patents
Finite-lived intangible assets:
Gross Carrying Amount	3,290	3,297
Accumulated Amortization and Impairments	(2,966)	(2,887)
Net Carrying Amount	324	410
Partner relationships
Finite-lived intangible assets:
Gross Carrying Amount	161	166
Accumulated Amortization and Impairments	(160)	(165)
Net Carrying Amount	1	1
Technology and other
Finite-lived intangible assets:
Gross Carrying Amount	206	209
Accumulated Amortization and Impairments	(191)	(189)
Net Carrying Amount	$ 15	$ 20