v3.26.1
Commitments and Contingencies - Contingencies - Additional Information (Detail)
€ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 14, 2024
USD ($)
Nov. 09, 2022
USD ($)
Jun. 02, 2022
USD ($)
Apr. 01, 2013
USD ($)
Jun. 30, 2023
USD ($)
Nov. 30, 2022
USD ($)
Feb. 28, 2021
USD ($)
Jul. 31, 2014
USD ($)
Sep. 30, 2013
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2023
USD ($)
Jan. 31, 2025
EUR (€)
Dec. 31, 2024
USD ($)
Oct. 10, 2024
USD ($)
Mar. 28, 2024
USD ($)
Aug. 21, 2023
USD ($)
Jul. 08, 2021
USD ($)
Mar. 31, 2021
EUR (€)
Nov. 30, 2020
EUR (€)
Feb. 29, 2012
USD ($)
Jul. 31, 2008
USD ($)
Commitment And Contingencies [Line Items]                                            
Annual sales of Effexor                   $ 2,600,000,000                        
Annual sales of Lamictal                                         $ 950,000,000 $ 2,300,000,000
Annual sales of Niaspan       $ 416,000,000         $ 1,100,000,000                          
Litigation settlement amount         $ 4,250,000,000                                  
Litigation settlement amount awarded distribution period         13 years                                  
Loss Contingency Accrual, Provision               $ 235,500,000                            
Annual sales of the time of settlement of viread             $ 582,000,000                              
Annual sales of the time of settlement of Truvada             2,400,000,000                              
Annual sales of the time of settlement of Atripla             2,900,000,000                              
Annual sales of the time of New launch of viread             728,000,000                              
Annual sales of the time of New launch of Truvada             2,100,000,000                              
Annual sales of the time of New launch of Atripla             $ 444,000,000                              
Litigation Settlement Amount Distributable In Kind         $ 1,200,000,000                                  
Accrual for Environmental Loss Contingencies                           $ 300,000                
Loss Contingencies On Environmental Laws Penalty                                   $ 1,400,000        
Revenues                     $ 1,500,000,000                      
Accrued amount for legal settlements and loss contingencies                     $ 4,753,000,000     $ 4,881,000,000           € 60.5    
Litigation fine amount of copaxone | €                         € 462.6           € 462.6      
Other commitment                               $ 150,000,000            
Annual Sales Of Revlimid           $ 3,500,000,000                                
Annual Sales At The Time Of Nuvigil Entered Into First Settlement Of With AN ANDA Filer $ 300,000,000                                          
Loss Contingency Claims Dismissed Value Paid To Each State Proportional To Its Share Of National Population                       $ 1,000,000,000,000                    
Percentage Of Share Of The National Population                       1.00%                    
Percentgae of amount in cash settlement         20.00%                                  
Litigation Settlement Amount Distributable in cash         $ 240,000,000                                  
Loss Contingency, Damages Awarded, Value   $ 176,500,000                                        
Deferred Prosecution Agreement With U.S. Department of Justice [Member] | Donation of Clotrimazole and Tobramycin [Member]                                            
Commitment And Contingencies [Line Items]                                            
Other commitment                                 $ 50,000,000          
Deferred Prosecution Agreement With U.S. Department of Justice [Member] | Fine for Violating the Antitrust Laws [Member]                                            
Commitment And Contingencies [Line Items]                                            
Other commitment, to be paid, year five                                 135,000,000          
Other commitment to pay for each year                                 22,500,000          
Other commitment                                 $ 225,000,000          
Opioid Litigation [Member]                                            
Commitment And Contingencies [Line Items]                                            
Loss contingency accrual, product liability, undiscounted, to be paid, year five         339,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year four         415,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year three         364,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year two         378,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year one         $ 412,000,000                                  
Modafinil Settlement Agreement [Member]                                            
Commitment And Contingencies [Line Items]                                            
Settlement as a percentage of aggregate subdivisions and tribes         100.00%                                  
Civil Action In Respect Of Donations To Patient Assistance Programmers [Member]                                            
Commitment And Contingencies [Line Items]                                            
Accrued amount for legal settlements and loss contingencies                             $ 425,000,000              
Loss contingency accrual due in fifth year                             175,000,000              
Loss contingency accrual due in fourth year                             99,000,000              
Loss contingency accrual due in third year                             49,000,000              
Loss contingency accrual next twelve months                             34,000,000              
Loss contingency accrual remainder of fiscal year                             19,000,000              
Civil Investigative Demand From Department Of Justice Civil Division [Member]                                            
Commitment And Contingencies [Line Items]                                            
Accrued amount for legal settlements and loss contingencies                             25,000,000              
Civil Investigative Demand From Department Of Justice Civil Division [Member] | Two Thousand And Twenty Five [Member]                                            
Commitment And Contingencies [Line Items]                                            
Loss contingency accrual current                             15,000,000              
Civil Investigative Demand From Department Of Justice Civil Division [Member] | Two Thousand And Twenty Four [Member]                                            
Commitment And Contingencies [Line Items]                                            
Loss contingency accrual current                             $ 10,000,000              
Ontario Teachers Securities Litigation [Member] | Settled Litigation [Member]                                            
Commitment And Contingencies [Line Items]                                            
Litigation settlement amount     $ 420,000,000