v3.26.1
Commitments and Contingencies - Contingencies - Additional Information (Detail)
€ in Millions
 1 Months Ended 12 Months Ended
Oct. 10, 2024
USD ($)
Jun. 14, 2024
USD ($)
Nov. 09, 2022
USD ($)
Jun. 02, 2022
USD ($)
Apr. 01, 2013
USD ($)
Jun. 30, 2023
USD ($)
Feb. 28, 2021
USD ($)
Jul. 31, 2014
USD ($)
Nov. 30, 2013
USD ($)
Sep. 30, 2013
USD ($)
Dec. 31, 2011
USD ($)
Mar. 31, 2023
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Jan. 31, 2025
EUR (€)
Dec. 31, 2024
USD ($)
Oct. 31, 2024
EUR (€)
Mar. 28, 2024
USD ($)
Aug. 21, 2023
USD ($)
Jul. 08, 2021
USD ($)
Feb. 29, 2012
USD ($)
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 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 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                                 $ 300,000,000,000            
Loss Contingencies On Environmental Laws Penalty                                         $ 1,400,000    
Annual sales of Xifaxan                             $ 1,500,000,000                
Commission surety underwritten guarantees | €                               € 462.6              
Generic modafinil, and imposed fines amount                         $ 4,854,000,000 $ 4,753,000,000                  
Litigation fine amount of copaxone | €                                   € 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                      
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 aggregate payments paid                         $ 33,000,000                    
Loss contingency accrual, product liability, undiscounted, to be paid, year five           337,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year four           339,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year three           416,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year two           365,000,000                                  
Loss contingency accrual, product liability, undiscounted, to be paid, year one           $ 379,000,000                                  
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]                                              
Generic modafinil, and imposed fines amount $ 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]                                              
Loss Contingency Accrual, Provision 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