v3.26.1
Fair Value Measurements (Details) - EBP, PR - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value $ 420,531 $ 393,110
Pfizer Inc. common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 37,889 41,341
Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 337,363 305,953
Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 13,239 15,540
Common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 30,193 28,941
Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 869 791
Other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 978 543
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 82,299 86,365
Level 1 | Pfizer Inc. common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 37,889 41,341
Level 1 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 0 0
Level 1 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 13,239 15,540
Level 1 | Common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 30,193 28,941
Level 1 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 0 0
Level 1 | Other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 978 543
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 338,232 306,745
Level 2 | Pfizer Inc. common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 0 0
Level 2 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 337,363 305,953
Level 2 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 0 0
Level 2 | Common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 0 0
Level 2 | Common/collective trust funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value 869 791
Level 2 | Other    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investments, at fair value $ 0 $ 0