Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Operations
Revenue	$ 8,153,495	$ 8,218,180	$ 8,037,374
Cost of revenue	7,703,507	7,796,321	7,570,672
Gross profit	449,988	421,859	466,702
Equity in earnings of joint ventures	24,319	48,650	44,819
General and administrative expenses	(97,318)	(80,903)	(90,298)
Goodwill impairment		(336,000)
Income from operations	376,989	53,606	421,223
Other income	3,522	10,603	5,008
Interest expense	(44,737)	(46,726)	(42,051)
Income before income tax expense	335,774	17,483	384,180
Income tax expense	92,578	74,416	100,090
Net income (loss)	243,196	(56,933)	284,090
Noncontrolling interests in income of consolidated subsidiaries, net of tax	(3,953)	(1,634)	(8,290)
Net income (loss) attributable to AECOM	239,243	(58,567)	275,800
Net income (loss) allocation:
Preferred stock dividend			2
Net income (loss) attributable to common stockholders	239,243	(58,567)	275,798
Net income (loss) attributable to AECOM	$ 239,243	$ (58,567)	$ 275,800
Net income (loss) attributable to AECOM per share:
Basic (in dollars per share)	$ 2.38	$ (0.52)	$ 2.35
Diluted (in dollars per share)	$ 2.35	$ (0.52)	$ 2.33
Weighted average shares outstanding:
Basic (in shares)	100,618	111,875	117,396
Diluted (in shares)	101,942	111,875	118,345