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Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Operations
Revenue	$ 4,381,296	$ 4,506,197	$ 8,678,947	$ 8,716,665
Cost of revenue	4,197,852	4,402,885	8,354,645	8,478,623
Gross profit	183,444	103,312	324,302	238,042
Equity in (loss) earnings of joint ventures	39,016	24,628	64,279	48,552
General and administrative expenses	(29,455)	(29,797)	(58,094)	(64,135)
Acquisition and integration expenses	(50,711)	(91,599)	(91,749)	(230,062)
Loss on disposal activities	(1,536)		(42,589)
Income (loss) from operations	140,758	6,544	196,149	(7,603)
Other income (expense)	746	(1,038)	3,788	1,541
Interest expense	(62,723)	(60,663)	(122,241)	(179,361)
Income (loss) before income tax expense	78,781	(55,157)	77,696	(185,423)
Income tax expense (benefit)	12,187	(75,761)	11,505	(87,960)
Net income (loss)	66,594	20,604	66,191	(97,463)
Noncontrolling interests in income of consolidated subsidiaries, net of tax	(24,766)	(20,338)	(44,730)	(41,246)
Net income (loss) attributable to AECOM	$ 41,828	$ 266	$ 21,461	$ (138,709)
Net income (loss) attributable to AECOM per share:
Basic (in dollars per share)	$ 0.27	$ 0.00	$ 0.14	$ (0.95)
Diluted (in dollars per share)	$ 0.27	$ 0.00	$ 0.14	$ (0.95)
Weighted average shares outstanding:
Basic (in shares)	154,295	151,053	153,957	146,472
Diluted (in shares)	155,448	152,818	155,131	146,472

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-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

+ Details

Name:	us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration