| Summary of Revenues by Geographic Region and Reportable Segment |
The following tables represent revenues by geographic region and reportable segment for the three and six months ended June 30, 2026 and 2025. Results for the three and six months ended June 30, 2025 reflect the recast of segment information based on the changes described in Note 14. | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | (in millions) | | Commercial Solutions | | Research & Development Solutions | | Total | | Revenues: | | | | | | | | Americas | | $ | 895 | | | $ | 1,144 | | | $ | 2,039 | | | Europe and Africa | | 687 | | | 722 | | | 1,409 | | | Asia-Pacific | | 211 | | | 709 | | | 920 | | | Total revenues | | $ | 1,793 | | | $ | 2,575 | | | $ | 4,368 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | | (in millions) | | Commercial Solutions | | Research & Development Solutions | | Total | | | Revenues: | | | | | | | | | Americas | | $ | 825 | | | $ | 1,110 | | | $ | 1,935 | | | | Europe and Africa | | 640 | | | 601 | | | 1,241 | | | | Asia-Pacific | | 186 | | | 655 | | | 841 | | | | Total revenues | | $ | 1,651 | | | $ | 2,366 | | | $ | 4,017 | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | (in millions) | | Commercial Solutions | | Research & Development Solutions | | Total | | Revenues: | | | | | | | | Americas | | $ | 1,751 | | | $ | 2,272 | | | $ | 4,023 | | | Europe and Africa | | 1,375 | | | 1,389 | | | 2,764 | | | Asia-Pacific | | 421 | | | 1,311 | | | 1,732 | | | Total revenues | | $ | 3,547 | | | $ | 4,972 | | | $ | 8,519 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | (in millions) | | Commercial Solutions | | Research & Development Solutions | | Total | | Revenues: | | | | | | | | Americas | | $ | 1,615 | | | $ | 2,127 | | | $ | 3,742 | | | Europe and Africa | | 1,233 | | | 1,232 | | | 2,465 | | | Asia-Pacific | | 375 | | | 1,264 | | | 1,639 | | | Total revenues | | $ | 3,223 | | | $ | 4,623 | | | $ | 7,846 | |
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