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RESTRUCTURING - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |
Total charges | $ 190 | $ 312
Employee termination costs | 132 | 217
Provision for restructuring | 133 | 220
Integration expenses | 41 | 71
Accelerated depreciation | 15 | 14
Asset impairments | 8 | 2
Cost of products sold |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 2 | 14
Selling, general and administrative |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 1 | 6
Research and development |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 21 | 1
Other (income)/expense, net |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 166 | 291
Other termination costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Other termination costs | 1 | 3
Other shutdown costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Other termination costs | (7) | 5
2023 Restructuring Plan |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | 143 | 68
Celgene and Other Acquisition Plans |  |
Restructuring Cost and Reserve [Line Items] |  |
Total charges | $ 47 | $ 244

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