Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income
Net income	$ 69,092	$ 71,215	$ 168,129	$ 164,969
Unrealized gain (loss) on derivatives:
Unrealized holding (loss) gain on derivatives	(1,749)	258	(1,944)	262
Reclassification adjustments for losses included in net income	411	478	1,300	1,372
Net unrealized gain (loss) on derivatives, net of tax	(1,338)	736	(644)	1,634
Foreign currency translation adjustments	22,406	(63,404)	(1,231)	(98,282)
Pension adjustments, net of tax	(1,745)	445	(2,351)	4,991
Other comprehensive income (loss), net of tax	19,323	(62,223)	(4,226)	(91,657)
Comprehensive income, net of tax	88,415	8,992	163,903	73,312
Noncontrolling interests in comprehensive income of consolidated subsidiaries, net of tax	140	(460)	(1,727)	(2,294)
Comprehensive income attributable to AECOM, net of tax	$ 88,555	$ 8,532	$ 162,176	$ 71,018