Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 351,651	$ 456,983
Cash in consolidated joint ventures	155,940	136,793
Total cash and cash equivalents	507,591	593,776
Accounts receivable-net	2,341,146	2,395,881
Prepaid expenses and other current assets	169,231	140,764
Deferred tax assets-net	31,716	16,872
TOTAL CURRENT ASSETS	3,049,684	3,147,293
PROPERTY AND EQUIPMENT-NET	270,344	325,917
DEFERRED TAX ASSETS-NET	118,135	126,948
INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES	83,843	91,049
GOODWILL	1,797,314	1,775,352
INTANGIBLE ASSETS-NET	87,394	96,973
OTHER NON-CURRENT ASSETS	132,654	101,036
TOTAL ASSETS	5,539,368	5,664,568
CURRENT LIABILITIES:
Short-term debt	12,024	1,641
Accounts payable	711,220	761,211
Accrued expenses and other current liabilities	890,123	821,663
Income taxes payable	5,776	12,641
Billings in excess of costs on uncompleted contracts	320,944	320,296
Current portion of long-term debt	1,469	160,950
TOTAL CURRENT LIABILITIES	1,941,556	2,078,402
OTHER LONG-TERM LIABILITIES	420,721	454,537
LONG-TERM DEBT	1,135,226	907,141
TOTAL LIABILITIES	3,497,503	3,440,080
COMMITMENTS AND CONTINGENCIES (Note 15)
AECOM STOCKHOLDERS' EQUITY:
Preferred stock, Class E-authorized, 20 shares; issued and outstanding, 2 and 3 shares as of June 30, 2013 and September 30, 2012, respectively; no par value, $1.00 liquidation preference value
Common stock-authorized, 300,000,000 shares of $0.01 par value as of June 30, 2013 and September 30, 2012; issued and outstanding, 97,617,749 and 107,041,003 as of June 30, 2013 and September 30, 2012, respectively	976	1,070
Additional paid-in capital	1,798,335	1,741,478
Accumulated other comprehensive loss	(270,830)	(179,173)
Retained earnings	457,249	606,089
TOTAL AECOM STOCKHOLDERS' EQUITY	1,985,730	2,169,464
Noncontrolling interests	56,135	55,024
TOTAL STOCKHOLDERS' EQUITY	2,041,865	2,224,488
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 5,539,368	$ 5,664,568