Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024
CURRENT ASSETS:
Cash and cash equivalents	$ 1,337,584	$ 1,316,945
Cash in consolidated joint ventures	243,072	263,932
Total cash and cash equivalents	1,580,656	1,580,877
Accounts receivable—net	2,648,977	2,793,307
Contract assets	1,800,685	1,806,458
Prepaid expenses and other current assets	758,412	758,693
Current assets held for sale	67,128	77,224
Income taxes receivable	143,500	159,500
TOTAL CURRENT ASSETS	6,999,358	7,176,059
PROPERTY AND EQUIPMENT—NET	362,860	354,377
DEFERRED TAX ASSETS—NET	326,035	326,685
INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES	144,947	138,067
GOODWILL	3,428,231	3,480,155
INTANGIBLE ASSETS—NET	5,926	6,932
OTHER NON-CURRENT ASSETS	140,949	147,228
OPERATING LEASE RIGHT-OF-USE ASSETS	410,521	432,166
TOTAL ASSETS	11,818,827	12,061,669
CURRENT LIABILITIES:
Short-term debt	3,539	3,080
Accounts payable	2,348,316	2,560,122
Accrued expenses and other current liabilities	2,360,461	2,385,731
Income taxes payable	30,399	27,418
Contract liabilities	1,305,640	1,298,327
Current liabilities held for sale	25,312	35,559
Current portion of long-term debt	65,888	63,844
TOTAL CURRENT LIABILITIES	6,139,555	6,374,081
OTHER LONG-TERM LIABILITIES	153,122	156,406
OPERATING LEASE LIABILITIES, NON-CURRENT	485,132	510,573
DEFERRED TAX LIABILITY-NET	29,152	27,509
PENSION BENEFIT OBLIGATIONS	156,311	172,360
LONG-TERM DEBT	2,456,012	2,450,330
TOTAL LIABILITIES	9,419,284	9,691,259
COMMITMENTS AND CONTINGENCIES (Note 15)
AECOM STOCKHOLDERS’ EQUITY:
Common stock-authorized, 300,000,000 shares of $0.01 par value as of December 31, 2024 and September 30, 2024; issued and outstanding 132,638,253 and 132,552,407 shares as of December 31, 2024 and September 30, 2024, respectively	1,326	1,326
Additional paid-in capital	4,351,963	4,347,197
Accumulated other comprehensive loss	(964,794)	(882,671)
Accumulated deficits	(1,184,485)	(1,281,647)
TOTAL AECOM STOCKHOLDERS’ EQUITY	2,204,010	2,184,205
Noncontrolling interests	195,533	186,205
TOTAL STOCKHOLDERS’ EQUITY	2,399,543	2,370,410
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 11,818,827	$ 12,061,669