Citable segment mix
AON's latest SEC segment disclosure for revenue by geography shows U.S. as the largest listed segment at $1.33B (37.9% of disclosed segment revenue).
| Segment | Period | Revenue | Mix |
|---|---|---|---|
| U.S. | Mar 31, 2026 | $1.33B | 37.9% |
| Europe, Middle East, & Africa other than U.K. and Ireland | Mar 31, 2026 | $1.12B | 32.0% |
| United Kingdom | Mar 31, 2026 | $482.00M | 13.8% |
| Asia Pacific | Mar 31, 2026 | $289.00M | 8.3% |
| Americas other than U.S. | Mar 31, 2026 | $261.00M | 7.5% |
| Ireland | Mar 31, 2026 | $25.00M | 0.7% |
Source: SEC EDGAR segment disclosures; period Mar 31, 2026.
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