Revenue and Contract Balances (Tables)

3 Months Ended

Dec. 31, 2023

Revenue from Contract with Customer [Abstract]

Summary of revenue disaggregated by client sector and contract type

The following tables present revenue disaggregated by client sector and contract type (in thousands):

	Three Months Ended
	December 31, 2023		January 1, 2023
Client Sector:
U.S. federal government (1)	$	382,076	$	276,075
U.S. state and local government	150,925		153,195
U.S. commercial	222,430		198,956
International (2)	472,836		266,540
Total	$	1,228,267	$	894,766
Contract Type:
Fixed-price	$	471,442	$	327,737
Time-and-materials	549,651		420,570
Cost-plus	207,174		146,459
Total	$	1,228,267	$	894,766

(1)    Includes revenue generated under U.S. federal government contracts performed outside the United States.

(2)    Includes revenue generated from non-U.S. clients, primarily in Canada, Australia, Europe and the United Kingdom.

Summary of net contract assets/liabilities

Net contract assets/liabilities consisted of the following (in thousands):

	Balance at
	December 31, 2023		October 1, 2023
Contract assets (1)	$	89,073	$	113,939
Contract liabilities	382,862		335,044
Net contract liabilities	$	(293,789)	$	(221,105)

(1)    Includes $6.0 million and $6.8 million of contract retentions at December 31, 2023 and October 1, 2023, respectively.

Components of net accounts receivable

Net accounts receivable consisted of the following (in thousands):

	Balance at
	December 31, 2023		October 1, 2023
Billed	$	700,880	$	672,712
Unbilled	344,628		306,788
Total accounts receivable	1,045,508		979,500
Allowance for doubtful accounts	(4,998)		(4,965)
Total accounts receivable, net	$	1,040,510	$	974,535

Remaining performance obligation, expected timing

We expect to satisfy our RUPO at December 31, 2023 over the following periods (in thousands):

	Amount
Within 12 months	$	3,149,015
Beyond	1,558,073
Total	$	4,707,088