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RESTRUCTURING - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Restructuring Cost and Reserve [Line Items] |  |
Total charges | $ 312 | $ 135
Employee termination costs | 217 | 65
Provision for restructuring | 220 | 67
Integration expenses | 71 | 67
Accelerated depreciation | 14 | 1
Asset impairments | 2 | 0
Other termination costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Other termination costs | 3 | 2
Other shutdown costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Other termination costs | 5 | 0
Cost of products sold |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 14 | 1
Marketing, selling and administrative |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 6 | 0
Research and development |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 1 | 0
Other (income)/expense, net |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 291 | 134
2023 Restructuring Plan |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 68 | 61
Celgene and Other Acquisition Plans |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | $ 244 | $ 74

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