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Business Acquisitions, Goodwill and Intangible Assets (Details 2) $ in Thousands | 6 Months Ended
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Mar. 31, 2016 USD ($)
Changes in the carrying value of goodwill by reporting segment |
Goodwill at the beginning of the period | $ 5,820,692
Post-Acquisition Adjustments | (29,000)
Foreign Exchange Impact | 5,200
Disposed | (11,300)
Goodwill at the end of the period | 5,785,619
Design and Consulting Services |
Changes in the carrying value of goodwill by reporting segment |
Goodwill at the beginning of the period | 3,163,300
Post-Acquisition Adjustments | (10,400)
Foreign Exchange Impact | 12,900
Goodwill at the end of the period | 3,165,800
Construction Services |
Changes in the carrying value of goodwill by reporting segment |
Goodwill at the beginning of the period | 918,500
Post-Acquisition Adjustments | (18,600)
Foreign Exchange Impact | 1,600
Disposed | (11,300)
Goodwill at the end of the period | 890,200
Management Services |
Changes in the carrying value of goodwill by reporting segment |
Goodwill at the beginning of the period | 1,738,900
Foreign Exchange Impact | (9,300)
Goodwill at the end of the period | $ 1,729,600

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