v3.26.1
Identifiable Intangible Assets - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets useful life   7 years  
Amortization of intangible assets $ 581 $ 588 $ 616
2026 484    
2027 497    
2028 446    
2029 397    
2030 390    
Impairment of intangible assets excluding goodwill $ 259 251 350
Impairment, Intangible Asset, Statement of Income or Comprehensive Income [Extensible Enumeration] Intangible Assets Impairments    
Minimum [Member] | Measurement input, discount rate [Member]      
Finite-Lived Intangible Assets [Line Items]      
Business combination, contingent consideration, liability, measurement input 8.5    
Maximum [Member] | Measurement input, discount rate [Member]      
Finite-Lived Intangible Assets [Line Items]      
Business combination, contingent consideration, liability, measurement input 11    
Generic Pipeline Products [Member] | In Process Research And Development To Product Rights [Member] | Development Progress And Changes In Other Key Valuation Assumptions [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill $ 18 57 90
In process research and development [Member] | Minimum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Business combination, contingent consideration, liability, measurement input 8.25    
In process research and development [Member] | Maximum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Business combination, contingent consideration, liability, measurement input 9.25    
In process research and development [Member] | Maximum [Member] | Measurement input, discount rate [Member]      
Finite-Lived Intangible Assets [Line Items]      
Business combination, contingent consideration, liability, measurement input 90    
Identifiable product rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill $ 242 $ 194 260
Identifiable product rights [Member] | Regulatory Price And Volume Of Products [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill     148
Identifiable product rights [Member] | Updated Market Assumptions [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill     $ 112
United States [Member] | Identifiable product rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill 87    
Europe [Member] | Identifiable product rights [Member]      
Finite-Lived Intangible Assets [Line Items]      
Impairment of intangible assets excluding goodwill $ 155