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Reportable Segments and Geographic Information - Summarized financial information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Sep. 30, 2022
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | $ 3,663,549 | $ 3,241,695 | $ 10,536,076 | $ 9,722,069 |
Gross profit | 250,078 | 220,550 | 693,160 | 630,706 |
Equity in earnings of joint ventures | (303,503) | 7,489 | (286,218) | 27,358 |
General and administrative expenses | (42,883) | (32,766) | (112,642) | (106,365) |
Restructuring costs | (9,115) | (12,264) | (50,547) | (88,927) |
Operating income (loss) | $ (105,423) | $ 183,009 | $ 243,753 | $ 462,772 |
Gross profit as a % of revenue | 6.80% | 6.80% | 6.60% | 6.50% |
Segment assets | $ 11,426,443 |  | $ 11,426,443 |  | $ 11,139,315
Corporate |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
General and administrative expenses | (38,900) | $ (29,800) | (103,100) | $ (97,800) |
Restructuring costs | (9,100) | (12,200) | (50,500) | (88,900) |
Operating income (loss) | (48,000) | (42,000) | (153,600) | (186,700) |
Segment assets | 1,086,700 |  | 1,086,700 |  | 1,095,300
Americas | Operating Segments |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | 2,829,500 | 2,457,000 | 8,039,000 | 7,320,400 |
Gross profit | 182,900 | 164,700 | 519,100 | 475,100 |
Equity in earnings of joint ventures | 3,500 | 2,800 | 9,300 | 9,200 |
Operating income (loss) | $ 186,400 | $ 167,500 | $ 528,400 | $ 484,300 |
Gross profit as a % of revenue | 6.50% | 6.70% | 6.50% | 6.50% |
Segment assets | $ 7,467,900 |  | $ 7,467,900 |  | 7,232,200
International | Operating Segments |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | 834,300 | $ 784,200 | 2,496,900 | $ 2,399,900 |
Gross profit | 67,400 | 55,300 | 173,900 | 153,800 |
Equity in earnings of joint ventures | 200 | 500 | 8,900 | 9,800 |
Operating income (loss) | $ 67,600 | $ 55,800 | $ 182,800 | $ 163,600 |
Gross profit as a % of revenue | 8.10% | 7.10% | 7.00% | 6.40% |
Segment assets | $ 2,711,800 |  | $ 2,711,800 |  | 2,467,900
AECOM Capital | Operating Segments |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | (200) | $ 500 | 200 | $ 1,800 |
Gross profit | (200) | 500 | 200 | 1,800 |
Equity in earnings of joint ventures | (307,200) | 4,200 | (304,400) | 8,400 |
General and administrative expenses | (4,000) | (3,000) | (9,600) | (8,600) |
Operating income (loss) | (311,400) | $ 1,700 | (313,800) | $ 1,600 |
Segment assets | $ 51,400 |  | $ 51,400 |  | $ 264,900

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