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Reportable Segments (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) segment | Jun. 30, 2015 USD ($) | Sep. 30, 2015 USD ($)
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Number of reportable segments | segment |  |  | 3 |  |
Revenue | $ 4,408,782 | $ 4,549,578 | $ 13,087,729 | $ 13,266,243 |
Cost of revenue | 4,237,439 | 4,423,060 | 12,592,084 | 12,901,683 |
Gross profit | 171,343 | 126,518 | 495,645 | 364,560 |
Equity in earnings of joint ventures | 18,513 | 27,776 | 82,792 | 76,328 |
General and administrative expenses | (28,863) | (24,418) | (86,957) | (88,553) |
Acquisition and integration expenses | (50,678) | (88,495) | (142,427) | (318,557) |
Loss on disposal activities |  |  | (42,589) |  |
Operating income (loss) | 110,315 | $ 41,381 | 306,464 | $ 33,778 |
Segment assets | $ 13,878,327 |  | $ 13,878,327 |  | $ 14,014,298
Gross profit as a % of revenue | 3.90% | 2.80% | 3.80% | 2.70% |
Corporate |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
General and administrative expenses | $ (28,700) | $ (24,400) | $ (86,900) | $ (88,500) |
Acquisition and integration expenses | (50,700) | (88,500) | (142,400) | (318,600) |
Operating income (loss) | (79,400) | (112,900) | (229,300) | (407,100) |
Segment assets | 810,000 |  | 810,000 |  | 609,800
Design and Consulting Services |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | 1,920,600 | 1,993,500 | 5,748,800 | 5,921,100 |
Gross profit | 122,900 | 101,100 | 299,400 | 200,400 |
Equity in earnings of joint ventures | 1,000 | 3,000 | 6,200 | 3,100 |
Operating income (loss) | 123,900 | $ 104,100 | 305,600 | $ 203,500 |
Segment assets | $ 6,834,400 |  | $ 6,834,400 |  | 7,118,200
Gross profit as a % of revenue | 6.40% | 5.10% | 5.20% | 3.40% |
Construction Services |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | $ 1,683,800 | $ 1,704,400 | $ 4,941,800 | $ 4,879,600 |
Gross profit | 9,100 | (10,400) | 27,800 | 27,500 |
Equity in earnings of joint ventures | 3,500 | 6,400 | 8,900 | 16,900 |
Loss on disposal activities |  |  | (42,600) |  |
Operating income (loss) | 12,600 | $ (4,000) | (5,900) | $ 44,400 |
Segment assets | $ 3,504,900 |  | $ 3,504,900 |  | 3,382,400
Gross profit as a % of revenue | 0.50% | (0.60%) | 0.60% | 0.60% |
Management Services |  |  |  |  |
Summarized financial information concerning the Company's reportable segments |  |  |  |  |
Revenue | $ 804,400 | $ 851,600 | $ 2,397,100 | $ 2,465,500 |
Gross profit | 39,300 | 35,900 | 168,400 | 136,700 |
Equity in earnings of joint ventures | 14,000 | 18,300 | 67,700 | 56,300 |
Operating income (loss) | 53,300 | $ 54,200 | 236,100 | $ 193,000 |
Segment assets | $ 2,729,000 |  | $ 2,729,000 |  | $ 2,903,900
Gross profit as a % of revenue | 4.90% | 4.20% | 7.00% | 5.50% |

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