RESTRUCTURING - Narrative (Details) $ in Millions	Sep. 30, 2025 USD ($)
2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related charges	$ 2,500
Restructuring and related cost, cost incurred to date	1,600
Celgene and Other Acquisition Plans
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	$ 115