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Business Acquisitions, Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2017

Business Acquisitions, Goodwill and Intangible Assets

Schedule of acquisition and integration expenses

		Three months ended Dec 31,
		2017			2016
		(in millions)
Severance and personnel costs		$	—		$	11.5
Professional service, real estate-related, and other expenses		—			3.9

Total		$	—		$	15.4

Schedule of changes in the carrying value of goodwill by reportable segment

		September 30, 2017			Acquisitions			Measurement Period Adjustments			Foreign Exchange Impact			December 31, 2017
		(in millions)
Design and Consulting Services		$	3,218.9		$	—		$	—		$	4.3		$	3,223.2
Construction Services		1,049.9			—			(2.3		)	(1.6		)	1,046.0
Management Services		1,724.1			—			—			3.7			1,727.8

Total		$	5,992.9		$	—		$	(2.3	)	$	6.4		$	5,997.0

Schedule of finite-lived intangible assets by major class

		December 31, 2017									September 30, 2017
		Gross Amount			Accumulated Amortization			Intangible Assets, Net			Gross Amount			Accumulated Amortization			Intangible Assets, Net			Amortization Period
		(in millions)																		(years)
Backlog and customer relationships		$	1,304.0		$	(893.7	)	$	410.3		$	1,283.6		$	(870.2	)	$	413.4		1 – 11
Trademark / tradename		18.3			(16.8		)	1.5			18.3			(16.6		)	1.7			0.3 - 2

Total		$	1,322.3		$	(910.5	)	$	411.8		$	1,301.9		$	(886.8	)	$	415.1

Schedule of estimated future amortization expense of intangible assets

Fiscal Year		(in millions)
2018 (nine months remaining)		$	71.0
2019		87.8
2020		73.7
2021		62.8
2022		49.7
Thereafter		66.8

Total		$	411.8