v3.26.1
Product and Geographic Information - Schedule of Sales of Company's Products (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenue from External Customer [Line Items]    
Revenues $ 1,460 $ 1,513
Nexplanon/Implanon NXT    
Revenue from External Customer [Line Items]    
Revenues 201 248
Follistim AQ    
Revenue from External Customer [Line Items]    
Revenues 61 69
NuvaRing    
Revenue from External Customer [Line Items]    
Revenues 24 22
Ganirelix Acetate Injection    
Revenue from External Customer [Line Items]    
Revenues 26 27
Marvelon/Mercilon    
Revenue from External Customer [Line Items]    
Revenues 26 39
Jada    
Revenue from External Customer [Line Items]    
Revenues 5 15
Other Women's Health    
Revenue from External Customer [Line Items]    
Revenues 46 43
Renflexis    
Revenue from External Customer [Line Items]    
Revenues 57 57
Hadlima    
Revenue from External Customer [Line Items]    
Revenues 67 47
Ontruzant    
Revenue from External Customer [Line Items]    
Revenues 5 18
Brenzys    
Revenue from External Customer [Line Items]    
Revenues 20 14
Other Biosimilars    
Revenue from External Customer [Line Items]    
Revenues 24 5
Atozet    
Revenue from External Customer [Line Items]    
Revenues 85 77
Zetia    
Revenue from External Customer [Line Items]    
Revenues 87 85
Cozaar/Hyzaar    
Revenue from External Customer [Line Items]    
Revenues 57 55
Vytorin    
Revenue from External Customer [Line Items]    
Revenues 21 23
Rosuzet    
Revenue from External Customer [Line Items]    
Revenues 6 4
Other Cardiovascular    
Revenue from External Customer [Line Items]    
Revenues 28 30
Singulair    
Revenue from External Customer [Line Items]    
Revenues 40 74
Nasonex    
Revenue from External Customer [Line Items]    
Revenues 65 72
Dulera    
Revenue from External Customer [Line Items]    
Revenues 35 43
Clarinex    
Revenue from External Customer [Line Items]    
Revenues 31 34
Other Respiratory    
Revenue from External Customer [Line Items]    
Revenues 12 13
Arcoxia    
Revenue from External Customer [Line Items]    
Revenues 59 62
Fosamax    
Revenue from External Customer [Line Items]    
Revenues 29 33
Diprospan    
Revenue from External Customer [Line Items]    
Revenues 35 30
Vtama    
Revenue from External Customer [Line Items]    
Revenues 25 24
Other Non-Opiod Pain, Bone and Dermatology    
Revenue from External Customer [Line Items]    
Revenues 68 68
Propecia    
Revenue from External Customer [Line Items]    
Revenues 30 26
Emgality    
Revenue from External Customer [Line Items]    
Revenues 54 32
Proscar    
Revenue from External Customer [Line Items]    
Revenues 26 24
Other    
Revenue from External Customer [Line Items]    
Revenues 87 78
Other    
Revenue from External Customer [Line Items]    
Revenues 18 22
U.S.    
Revenue from External Customer [Line Items]    
Revenues 358 412
U.S. | Nexplanon/Implanon NXT    
Revenue from External Customer [Line Items]    
Revenues 127 176
U.S. | Follistim AQ    
Revenue from External Customer [Line Items]    
Revenues 21 35
U.S. | NuvaRing    
Revenue from External Customer [Line Items]    
Revenues 6 6
U.S. | Ganirelix Acetate Injection    
Revenue from External Customer [Line Items]    
Revenues 2 5
U.S. | Marvelon/Mercilon    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Jada    
Revenue from External Customer [Line Items]    
Revenues 5 15
U.S. | Other Women's Health    
Revenue from External Customer [Line Items]    
Revenues 17 15
U.S. | Renflexis    
Revenue from External Customer [Line Items]    
Revenues 42 44
U.S. | Hadlima    
Revenue from External Customer [Line Items]    
Revenues 51 33
U.S. | Ontruzant    
Revenue from External Customer [Line Items]    
Revenues 4 4
U.S. | Brenzys    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Other Biosimilars    
Revenue from External Customer [Line Items]    
Revenues 11 0
U.S. | Atozet    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Zetia    
Revenue from External Customer [Line Items]    
Revenues 1 1
U.S. | Cozaar/Hyzaar    
Revenue from External Customer [Line Items]    
Revenues 2 2
U.S. | Vytorin    
Revenue from External Customer [Line Items]    
Revenues 1 1
U.S. | Rosuzet    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Other Cardiovascular    
Revenue from External Customer [Line Items]    
Revenues 1 0
U.S. | Singulair    
Revenue from External Customer [Line Items]    
Revenues 2 2
U.S. | Nasonex    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Dulera    
Revenue from External Customer [Line Items]    
Revenues 23 34
U.S. | Clarinex    
Revenue from External Customer [Line Items]    
Revenues 1 0
U.S. | Other Respiratory    
Revenue from External Customer [Line Items]    
Revenues 11 10
U.S. | Arcoxia    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Fosamax    
Revenue from External Customer [Line Items]    
Revenues 0 1
U.S. | Diprospan    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Vtama    
Revenue from External Customer [Line Items]    
Revenues 23 20
U.S. | Other Non-Opiod Pain, Bone and Dermatology    
Revenue from External Customer [Line Items]    
Revenues 3 4
U.S. | Propecia    
Revenue from External Customer [Line Items]    
Revenues 1 1
U.S. | Emgality    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Proscar    
Revenue from External Customer [Line Items]    
Revenues 0 0
U.S. | Other    
Revenue from External Customer [Line Items]    
Revenues 3 3
U.S. | Other    
Revenue from External Customer [Line Items]    
Revenues 0 0
Int’l    
Revenue from External Customer [Line Items]    
Revenues 1,102 1,101
Int’l | Nexplanon/Implanon NXT    
Revenue from External Customer [Line Items]    
Revenues 74 72
Int’l | Follistim AQ    
Revenue from External Customer [Line Items]    
Revenues 39 34
Int’l | NuvaRing    
Revenue from External Customer [Line Items]    
Revenues 18 16
Int’l | Ganirelix Acetate Injection    
Revenue from External Customer [Line Items]    
Revenues 24 23
Int’l | Marvelon/Mercilon    
Revenue from External Customer [Line Items]    
Revenues 26 39
Int’l | Jada    
Revenue from External Customer [Line Items]    
Revenues 0 0
Int’l | Other Women's Health    
Revenue from External Customer [Line Items]    
Revenues 30 27
Int’l | Renflexis    
Revenue from External Customer [Line Items]    
Revenues 15 12
Int’l | Hadlima    
Revenue from External Customer [Line Items]    
Revenues 16 14
Int’l | Ontruzant    
Revenue from External Customer [Line Items]    
Revenues 1 14
Int’l | Brenzys    
Revenue from External Customer [Line Items]    
Revenues 20 14
Int’l | Other Biosimilars    
Revenue from External Customer [Line Items]    
Revenues 13 5
Int’l | Atozet    
Revenue from External Customer [Line Items]    
Revenues 85 77
Int’l | Zetia    
Revenue from External Customer [Line Items]    
Revenues 86 84
Int’l | Cozaar/Hyzaar    
Revenue from External Customer [Line Items]    
Revenues 55 53
Int’l | Vytorin    
Revenue from External Customer [Line Items]    
Revenues 20 22
Int’l | Rosuzet    
Revenue from External Customer [Line Items]    
Revenues 6 4
Int’l | Other Cardiovascular    
Revenue from External Customer [Line Items]    
Revenues 27 30
Int’l | Singulair    
Revenue from External Customer [Line Items]    
Revenues 38 72
Int’l | Nasonex    
Revenue from External Customer [Line Items]    
Revenues 65 71
Int’l | Dulera    
Revenue from External Customer [Line Items]    
Revenues 12 10
Int’l | Clarinex    
Revenue from External Customer [Line Items]    
Revenues 30 34
Int’l | Other Respiratory    
Revenue from External Customer [Line Items]    
Revenues 1 3
Int’l | Arcoxia    
Revenue from External Customer [Line Items]    
Revenues 59 62
Int’l | Fosamax    
Revenue from External Customer [Line Items]    
Revenues 29 32
Int’l | Diprospan    
Revenue from External Customer [Line Items]    
Revenues 35 30
Int’l | Vtama    
Revenue from External Customer [Line Items]    
Revenues 2 4
Int’l | Other Non-Opiod Pain, Bone and Dermatology    
Revenue from External Customer [Line Items]    
Revenues 65 65
Int’l | Propecia    
Revenue from External Customer [Line Items]    
Revenues 28 24
Int’l | Emgality    
Revenue from External Customer [Line Items]    
Revenues 54 32
Int’l | Proscar    
Revenue from External Customer [Line Items]    
Revenues 26 24
Int’l | Other    
Revenue from External Customer [Line Items]    
Revenues 85 76
Int’l | Other    
Revenue from External Customer [Line Items]    
Revenues $ 18 $ 22