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Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Summarized financial information concerning the Company's reportable segments |  |  |  |
Revenue | $ 3,235,610 | $ 3,356,338 |  |
Gross profit | 165,800 | 123,396 |  |
Equity in earnings of joint ventures | 9,928 | 6,632 |  |
General and administrative expenses | (43,614) | (35,907) |  |
Restructuring costs | (44,925) | (63,295) |  |
Operating income (loss) | 87,189 | $ 30,826 |  |
Total assets | $ 15,229,359 |  | $ 14,461,591 |
Gross profit as a % of revenue | 5.10% | 3.70% |  |
Total |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |
Revenue | $ 3,235,600 | $ 3,356,300 |  |
Gross profit | 165,800 | 123,400 |  |
Equity in earnings of joint ventures | 9,900 | 6,600 |  |
General and administrative expenses | (43,600) | (35,900) |  |
Restructuring costs | (44,900) | (63,300) |  |
Operating income (loss) | 87,200 | 30,800 |  |
Total assets | 15,229,400 |  | $ 14,461,600 |
Corporate |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |
General and administrative expenses | (41,200) | (34,200) |  |
Restructuring costs | (44,900) | (63,300) |  |
Operating income (loss) | (86,100) | (97,500) |  |
Total assets | 643,800 |  |  | $ 607,000
Americas |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |
Revenue | 2,452,000 | 2,560,400 |  |
Gross profit | 139,400 | 107,200 |  |
Equity in earnings of joint ventures | 6,400 | 6,300 |  |
Operating income (loss) | 145,800 | $ 113,500 |  |
Total assets | $ 7,764,400 |  |  | 7,437,300
Gross profit as a % of revenue | 5.70% | 4.20% |  |
International |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |
Revenue | $ 783,100 | $ 792,000 |  |
Gross profit | 25,900 | 12,300 |  |
Equity in earnings of joint ventures | 2,800 | 2,800 |  |
Operating income (loss) | 28,700 | $ 15,100 |  |
Total assets | $ 2,529,600 |  |  | 2,247,100
Gross profit as a % of revenue | 3.30% | 1.60% |  |
AECOM Capital |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |
Revenue | $ 500 | $ 3,900 |  |
Gross profit | 500 | 3,900 |  |
Equity in earnings of joint ventures | 700 | (2,500) |  |
General and administrative expenses | (2,400) | (1,700) |  |
Operating income (loss) | (1,200) | $ (300) |  |
Total assets | $ 203,200 |  |  | $ 197,800

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