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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Other intangible assets    
Total other intangible assets, gross carrying amounts $ 72,418 $ 73,340
Accumulated amortization (53,315) (50,033)
Other intangible assets, net 19,103 23,307
IPRD    
Other intangible assets    
IPRD 7,600 7,985
Other intangible assets, net 7,600 7,985
R&D technology    
Other intangible assets    
Finite-lived intangible assets, net 1,980 1,980
Accumulated amortization (605) (275)
Other intangible assets, net $ 1,375 1,705
R&D technology | Minimum    
Other intangible assets    
Finite-lived intangible asset, useful life 6 years  
Acquired marketed product rights    
Other intangible assets    
Finite-lived intangible assets, net $ 61,385 61,876
Accumulated amortization (51,646) (48,659)
Other intangible assets, net $ 9,739 13,217
Acquired marketed product rights | Minimum    
Other intangible assets    
Finite-lived intangible asset, useful life 3 years  
Acquired marketed product rights | Maximum    
Other intangible assets    
Finite-lived intangible asset, useful life 17 years  
Capitalized software    
Other intangible assets    
Finite-lived intangible assets, net $ 1,453 1,499
Accumulated amortization (1,064) (1,099)
Other intangible assets, net $ 389 $ 400
Capitalized software | Minimum    
Other intangible assets    
Finite-lived intangible asset, useful life 3 years  
Capitalized software | Maximum    
Other intangible assets    
Finite-lived intangible asset, useful life 10 years