Reportable Segments (Tables)

12 Months Ended

Sep. 28, 2025

Segment Reporting [Abstract]

Summary of summarized financial information of reportable segments

The tables below present financial information of our reportable segments (in thousands):

	Fiscal Year Ended September 28, 2025
	GSG		CIG		Total
Revenue from external customers	$	2,637,426	$	2,805,164	$	5,442,590
Inter-segment revenue	36,483		39,483		75,966
Segment revenue	2,673,909		2,844,647		5,518,556
Elimination of inter-segment revenue					(75,966)
Total consolidated revenue					5,442,590
Subcontractor costs - external	(504,644)		(320,586)		(825,230)
Subcontractor costs - inter-segment	(39,483)		(36,483)		(75,966)
Segment subcontractor costs	(544,127)		(357,069)		(901,196)
Elimination of inter-segment subcontractor costs					75,966
Total consolidated subcontractor costs					(825,230)
Other segment items (1)	(1,789,231)		(2,130,713)		(3,919,944)
Segment operating income	340,551		356,865		697,416
Reconciliation of profit (segment operating income):
Legal contingency costs					(115,000)
Impairment of goodwill					(92,416)
Contingent consideration – fair value adjustments					12,228
Interest income					9,837
Interest expense					(40,639)
Other corporate expenses (3)					(93,809)
Income before income tax expense					$	377,617

	Fiscal Year Ended September 29, 2024
	GSG		CIG		Total
Revenue from external customers	$	2,445,746	$	2,752,933	$	5,198,679
Inter-segment revenue	37,609		33,798		71,407
Segment revenue	2,483,355		2,786,731		5,270,086
Elimination of inter-segment revenue					(71,407)
Total consolidated revenue					5,198,679
Subcontractor costs - external	(539,579)		(337,238)		(876,817)
Subcontractor costs - inter-segment	(33,798)		(37,609)		(71,407)
Segment subcontractor costs	(573,377)		(374,847)		(948,224)
Elimination of inter-segment subcontractor costs					71,407
Total consolidated subcontractor costs					(876,817)
Other segment items (1)	(1,628,952)		(2,083,374)		(3,712,326)
Segment operating income	281,026		328,510		609,536
Reconciliation of profit (segment operating income):
Acquisition and integration expenses					(7,138)
Contingent consideration – fair value adjustments					(2,541)
Interest income					7,288
Interest expense					(44,559)
Other corporate expenses (3)					(99,120)
Income before income tax expense					$	463,466
	Fiscal Year Ended October 1, 2023
	GSG		CIG		Total
Revenue from external customers	$	2,128,330	$	2,394,220	$	4,522,550
Inter-segment revenue	30,559		30,429		60,988
Segment revenue	2,158,889		2,424,649		4,583,538
Elimination of inter-segment revenue					(60,988)
Total consolidated revenue					4,522,550
Subcontractor costs - external	(493,020)		(278,441)		(771,461)
Subcontractor costs - inter-segment	(30,429)		(30,559)		(60,988)
Segment subcontractor costs	(523,449)		(309,000)		(832,449)
Elimination of inter-segment subcontractor costs					60,988
Total consolidated subcontractor costs					(771,461)
Other segment items (1)(2)	(1,403,678)		(1,871,899)		(3,275,577)
Segment operating income	231,762		243,750		475,512
Reconciliation of profit (segment operating income):
Acquisition and integration expenses					(28,105)
Right-of-use operating lease asset impairment					(1,158)

Contingent consideration – fair value adjustments	(12,255)
Interest income	5,898
Interest expense	(52,435)
Other non-operating income	89,402
Other corporate expenses (3)	(75,881)
Income before income tax expense	$	400,978

(1) These amounts include $3.0 million, $3.3 million and $3.3 million of GSG depreciation expense for fiscal 2025, 2024 and 2023, respectively, and $17.8 million, $20.1 million and $16.3 million of CIG depreciation expense for fiscal 2025, 2024 and 2023, respectively. Additionally, our GSG other segment items include the equity in the net income of investees accounted for by the equity method of $1.1 million, $1.6 million and $2.8 million for fiscal 2025, 2024 and 2023, respectively. Our CIG other segment items also reflect the equity in the net income of investees accounted for by the equity method of $2.5 million, $3.3 million and $3.2 million for fiscal 2025, 2024 and 2023, respectively.

(2) The fiscal 2023 amounts include lease impairment of $15.1 million ($6.8 million in GSG and $8.3 million in CIG) as well as acquisition and integration expenses of $5.1 million in CIG.

(3) Other corporate expenses include the amortization expense of intangible assets of $37.1 million, $50.0 million and $41.2 million for fiscal 2025, 2024 and 2023, respectively. These amounts also include $19.3 million, $18.5 million and $16.4 million of stock-based compensation expense for fiscal 2025, 2024 and 2023, respectively.

Summary of geographic information

The table below presents revenue by geographic area (in thousands):

	Fiscal Year Ended
Revenue:	September 28, 2025		September 29, 2024		October 1, 2023
United States	$	3,445,844	$	3,198,823	$	2,863,635
United Kingdom	771,723		711,617		601,157
Australia	489,102		529,114		449,507
Canada	512,295		498,575		436,222
Others	223,626		260,550		172,029
Total	$	5,442,590	$	5,198,679	$	4,522,550

Long-lived assets consist of property and equipment and exclude other assets, operating lease assets, goodwill, intangible assets and deferred tax assets. The following table presents long-lived assets by geographic area (in thousands):

	Fiscal Year Ended
Long-lived assets:		September 28, 2025		September 29, 2024
United States		$	15,675	$	17,612
United Kingdom		20,756		19,503
Australia		10,793		11,990
Netherlands		8,932		12,371
Canada		7,181		8,177
Others		2,811		3,412
Total		$	66,148	$	73,065