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INTANGIBLE ASSETS AND GOODWILL - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | $ 11,183 | $ 11,547
Additions |  | 31
Impairment |  | (493)
Foreign exchange and other | (23) | 98
Balance at the end of the period | 11,160 | 11,183
Bausch + Lomb |  |
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | 5,314 | 5,246
Additions |  | 31
Impairment |  | 0
Foreign exchange and other | (28) | 37
Balance at the end of the period | 5,286 | 5,314
Salix |  |
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | 3,159 | 3,159
Additions |  | 0
Impairment |  | 0
Foreign exchange and other | 0 | 0
Balance at the end of the period | 3,159 | 3,159
International |  |
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | 862 | 789
Additions |  | 0
Impairment |  | 0
Foreign exchange and other | (4) | 73
Balance at the end of the period | 858 | 862
Solta Medical |  |
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | 115 | 115
Additions |  | 0
Impairment |  | 0
Foreign exchange and other | 0 | 0
Balance at the end of the period | 115 | 115
Diversified |  |
Change in the carrying amount of goodwill |  |
Balance at the beginning of the period | 1,733 | 2,238
Additions |  | 0
Impairment |  | (493)
Foreign exchange and other | 9 | (12)
Balance at the end of the period | $ 1,742 | $ 1,733

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