Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 456,983	$ 349,868
Cash in consolidated joint ventures	136,793	107,072
Total cash and cash equivalents	593,776	456,940
Accounts receivable-net	2,395,881	2,380,181
Prepaid expenses and other current assets	140,764	100,575
Income taxes receivable		45,239
Deferred tax assets-net	16,872	7,131
TOTAL CURRENT ASSETS	3,147,293	2,990,066
PROPERTY AND EQUIPMENT-NET	325,917	323,826
DEFERRED TAX ASSETS-NET	126,948	82,966
INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES	91,049	71,124
GOODWILL	1,775,352	2,086,330
INTANGIBLE ASSETS-NET	96,973	119,140
OTHER NON-CURRENT ASSETS	101,036	115,876
TOTAL ASSETS	5,664,568	5,789,328
CURRENT LIABILITIES:
Short-term debt	1,641	6,570
Accounts payable	761,211	679,111
Accrued expenses and other current liabilities	821,663	792,690
Income taxes payable	12,641
Billings in excess of costs on uncompleted contracts	320,296	324,899
Current portion of long-term debt	160,950	11,176
TOTAL CURRENT LIABILITIES	2,078,402	1,814,446
OTHER LONG-TERM LIABILITIES	454,537	435,022
LONG-TERM DEBT	907,141	1,144,723
TOTAL LIABILITIES	3,440,080	3,394,191
COMMITMENTS AND CONTINGENCIES (Note 20)
AECOM STOCKHOLDERS' EQUITY:
Preferred stock, Class E-authorized, 20 shares; issued and outstanding, 3 shares as of September 30, 2012 and 2011; no par value, $1.00 liquidation preference value
Common stock-authorized, 300,000,000 shares of $0.01 par value as of September 30, 2012 and 2011; issued and outstanding, 107,041,003 and 113,248,337 shares as of September 30, 2012 and 2011, respectively	1,070	1,132
Additional paid-in capital	1,741,478	1,699,207
Accumulated other comprehensive loss	(179,173)	(187,574)
Retained earnings	606,089	826,946
TOTAL AECOM STOCKHOLDERS' EQUITY	2,169,464	2,339,711
Noncontrolling interests	55,024	55,426
TOTAL STOCKHOLDERS' EQUITY	2,224,488	2,395,137
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 5,664,568	$ 5,789,328