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Reportable Segments | 9 Months Ended
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Jun. 30, 2025
Segment Reporting [Abstract] |
Reportable Segments | Reportable Segments The Company manages its operations under three reportable segments according to their geographic regions and business activities. In identifying its reportable segments, the Company considered the financial information provided to its chief operating decision maker (CODM), who is the chief executive officer. The financial data is organized by geographic region and global business lines. The CODM uses this information to allocate resources and assess the performance of the segments primarily based on revenue less pass-through revenue and attributable earnings before interest, tax, and amortization expense. After considering various factors, including the development and utilization of financial data to the CODM, the Company concluded that identifying its operating segments by geography was consistent with the objectives of ASC 280-10. Certain operating segments have been aggregated based on similar characteristics, including long-term financial performance, the nature of services provided, internal process for delivering those services, and types of customers, to arrive at the Company’s reportable segments. The Company’s Americas reportable segment provides planning, consulting, architectural and engineering design services, and construction management services to public and private clients in the United States, Canada, and Latin America and is comprised of the Design and Consulting Services Americas and Construction Management operating segments. The Company’s International reportable segment provides similar professional services to public and private clients in Europe and India, the Middle East and Africa, Asia, and Australia and New Zealand and is comprised of the operating segments in those geographic regions. The Company’s AECOM Capital (ACAP) operating segment is its own reportable segment and primarily invests in and develops real estate projects. Certain expenses that are determined to be related to the Company as a whole are not deemed to be part of an operating segment but are reported within Corporate. The following tables set forth summarized financial information concerning the Company’s reportable segments:
Reportable Segments: |  | Americas |  | International |  | AECOM Capital |  | Corporate |  | Total
|  | ($ in millions)
Three Months Ended June 30, 2025: |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 3,277.2 |  |  | $ | 901.1 |  |  | $ | 0.1 |  |  | $ | — |  |  | $ | 4,178.4 |
Gross profit |  | 238.8 |  |  | 88.0 |  |  | 0.1 |  |  | — |  |  | 326.9 |
Equity in earnings of joint ventures |  | 2.2 |  |  | 2.1 |  |  | 1.0 |  |  | — |  |  | 5.3 |
General and administrative expenses |  | — |  |  | — |  |  | (2.3) |  |  | (35.9) |  |  | (38.2) |
Restructuring costs |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Operating income (loss) |  | 241.0 |  |  | 90.1 |  |  | (1.2) |  |  | (35.9) |  |  | 294.0 |
Gross profit as a % of revenue |  | 7.3 | % |  | 9.8 | % |  |  |  |  |  | 7.8 | %
Three Months Ended June 30, 2024: |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 3,246.9 |  |  | $ | 904.2 |  |  | $ | 0.1 |  |  | $ | — |  |  | $ | 4,151.2 |
Gross profit |  | 203.9 |  |  | 81.1 |  |  | 0.1 |  |  | — |  |  | 285.1 |
Equity in earnings of joint ventures |  | 3.5 |  |  | 3.5 |  |  | 0.7 |  |  | — |  |  | 7.7 |
General and administrative expenses |  | — |  |  | — |  |  | (0.6) |  |  | (35.6) |  |  | (36.2) |
Restructuring costs |  | — |  |  | — |  |  | — |  |  | (29.1) |  |  | (29.1) |
Operating income |  | 207.4 |  |  | 84.6 |  |  | 0.2 |  |  | (64.7) |  |  | 227.5 |
Gross profit as a % of revenue |  | 6.3 | % |  | 9.0 | % |  |  |  |  |  | 6.9 | %
Nine Months Ended June 30, 2025: |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 9,285.9 |  |  | $ | 2,677.9 |  |  | $ | 0.4 |  |  | $ | — |  |  | $ | 11,964.2 |
Gross profit |  | 641.5 |  |  | 244.2 |  |  | 0.4 |  |  | — |  |  | 886.1 |
Equity in earnings of joint ventures |  | 12.6 |  |  | 9.0 |  |  | 0.1 |  |  | — |  |  | 21.7 |
General and administrative expenses |  | — |  |  | — |  |  | (7.5) |  |  | (111.2) |  |  | (118.7) |
Restructuring costs |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Operating income (loss) |  | 654.1 |  |  | 253.2 |  |  | (7.0) |  |  | (111.2) |  |  | 789.1 |
Gross profit as a % of revenue |  | 6.9 | % |  | 9.1 | % |  |  |  |  |  | 7.4 | %
Nine Months Ended June 30, 2024: |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 9,324.2 |  |  | $ | 2,670.0 |  |  | $ | 0.8 |  |  | $ | — |  |  | $ | 11,995.0 |
Gross profit |  | 559.3 |  |  | 230.1 |  |  | 0.8 |  |  | — |  |  | 790.2 |
Equity in earnings (losses) of joint ventures |  | 11.9 |  |  | 12.8 |  |  | (26.5) |  |  | — |  |  | (1.8) |
General and administrative expenses |  | — |  |  | — |  |  | (12.7) |  |  | (103.9) |  |  | (116.6) |
Restructuring costs |  | — |  |  | — |  |  | — |  |  | (80.7) |  |  | (80.7) |
Operating income (loss) |  | 571.2 |  |  | 242.9 |  |  | (38.4) |  |  | (184.6) |  |  | 591.1 |
Gross profit as a % of revenue |  | 6.0 | % |  | 8.6 | % |  |  |  |  |  | 6.6 | %
Total assets |  |  |  |  |  |  |  |  |  |
June 30, 2025 |  | $ | 7,864.3 |  |  | $ | 2,830.8 |  |  | $ | 46.8 |  |  | $ | 1,493.4 |  |  |
September 30, 2024 |  | $ | 7,988.1 |  |  | $ | 2,734.5 |  |  | $ | 53.2 |  |  | $ | 1,208.7 |  |  |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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