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INTANGIBLE ASSETS AND GOODWILL - Schedule of Goodwill (Details) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Oct. 01, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Change in the carrying amount of goodwill |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | $ 13,044,000,000 | $ 13,126,000,000 | $ 13,142,000,000
Acquisition of certain assets of Synergy |  |  |  |  |  | 3,000,000
Goodwill reclassified to assets held for sale |  |  |  |  | (217,000,000) | (18,000,000)
Foreign exchange and other |  |  |  | (118,000,000) | 117,000,000 | (1,000,000)
Assets held for sale reclassified to goodwill |  |  |  |  | 18,000,000 |
Realignment of segment goodwill |  |  |  | 0 |  |
Impairment | $ 0 | $ 0 | $ 0 | (469,000,000) |  |
Balance at the end of the period |  |  |  | 12,457,000,000 | 13,044,000,000 | 13,126,000,000
Bausch + Lomb/ International |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | 5,704,000,000 | 5,786,000,000 | 5,805,000,000
Goodwill reclassified to assets held for sale |  |  |  |  | (217,000,000) | (18,000,000)
Foreign exchange and other |  |  |  | 0 | 117,000,000 | (1,000,000)
Assets held for sale reclassified to goodwill |  |  |  |  | 18,000,000 |
Realignment of segment goodwill |  |  |  | (5,704,000,000) |  |
Impairment |  |  |  | 0 |  |
Balance at the end of the period |  |  |  | 0 | 5,704,000,000 | 5,786,000,000
Bausch + Lomb |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Foreign exchange and other |  |  |  | (77,000,000) |  |
Realignment of segment goodwill |  |  |  | 5,395,000,000 |  |
Balance at the end of the period |  |  |  | 5,318,000,000 |  |
Salix |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | 3,159,000,000 | 3,159,000,000 | 3,156,000,000
Acquisition of certain assets of Synergy |  |  |  |  |  | 3,000,000
Balance at the end of the period |  |  |  | 3,159,000,000 | 3,159,000,000 | 3,159,000,000
International Rx |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Foreign exchange and other |  |  |  | (62,000,000) |  |
Realignment of segment goodwill |  |  |  | 887,000,000 |  |
Balance at the end of the period |  |  |  | 825,000,000 |  |
Ortho Dermatologics |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | 1,267,000,000 | 1,267,000,000 | 1,267,000,000
Impairment |  |  |  | (469,000,000) |  |
Balance at the end of the period |  |  |  | 798,000,000 | 1,267,000,000 | 1,267,000,000
Diversified Products |  |  |  |  |  |
Change in the carrying amount of goodwill |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | 2,914,000,000 | 2,914,000,000 | 2,914,000,000
Foreign exchange and other |  |  |  | 21,000,000 |  |
Realignment of segment goodwill |  |  |  | (578,000,000) |  |
Balance at the end of the period |  |  |  | $ 2,357,000,000 | $ 2,914,000,000 | $ 2,914,000,000

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