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Revenue Revenue Recognition and Deferred Revenue (Tables)
 3 Months Ended
Mar. 31, 2025
Revenue Recognition and Deferred Revenue [Abstract]  
Revenue from External Customers by Geographic Areas
The following tables present our revenue disaggregated by geographic area, species and major product category:
Revenue by geographic area
Three Months Ended
March 31,
(MILLIONS OF DOLLARS)20252024
United States$1,183 $1,163 
Australia75 73 
Brazil88 101 
Canada67 61 
Chile34 31 
China60 76 
France40 41 
Germany51 51 
Italy29 28 
Japan36 37 
Mexico37 44 
Spain33 32 
United Kingdom77 77 
Other developed markets133 127 
Other emerging markets248 228 
2,191 2,170 
Contract manufacturing & human health29 20 
Total Revenue$2,220 $2,190 
Revenue from External Customers by Major Species
Revenue by major species
Three Months Ended
March 31,
(MILLIONS OF DOLLARS)20252024
U.S.
Companion animal$973 $898 
Livestock210 265 
1,183 1,163 
International
Companion animal573 552 
Livestock435 455 
1,008 1,007 
Total
Companion animal1,546 1,450 
Livestock645 720 
Contract manufacturing & human health29 20 
Total Revenue$2,220 $2,190 
Revenue from External Customers by Species
Revenue by species
Three Months Ended
March 31,
(MILLIONS OF DOLLARS)20252024
Companion Animal:
Dogs and Cats$1,481 $1,384 
Horses65 66 
1,546 1,450 
Livestock:
Cattle358 391 
Swine111 127 
Poultry106 139 
Fish53 45 
Sheep and other17 18 
645 720 
Contract manufacturing & human health29 20 
Total Revenue$2,220 $2,190 
Schedule of Significant Product Revenues
Revenue by major product category
Three Months Ended
March 31,
(MILLIONS OF DOLLARS)20252024
Parasiticides$562 $504 
Vaccines447 452 
Dermatology390 363 
Anti-infectives249 281 
Pain and sedation210 194 
Other pharmaceutical159 156 
Animal health diagnostics103 82 
Other non-pharmaceutical66 61 
Medicated feed additives5 77 
2,191 2,170 
Contract manufacturing & human health29 20 
Total Revenue$2,220 $2,190