Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 29, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in carrying value of goodwill

The following table summarizes the changes in the carrying value of goodwill by reportable segment (in thousands):

	GSG		CIG		Total
Balance at October 2, 2022	$	519,102	$	591,310	$	1,110,412
Acquisition activity	138,380		621,496		759,876
Translation and other adjustments	2,460		7,496		9,956
Balance at October 1, 2023	659,942		1,220,302		1,880,244
Acquisition activity	84,865		—		84,865
Translation and other adjustments	6,010		75,450		81,460
Balance at September 29, 2024	$	750,817	$	1,295,752	$	2,046,569

Summary of acquired identifiable intangible assets with finite useful lives

The following table presents the gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in "Intangible assets, net" on the consolidated balance sheets ($ in thousands):

	Fiscal Year Ended
	September 29, 2024							October 1, 2023
	Weighted- Average Remaining Life (in years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	8.3	$	198,726	$	(57,975)	$	140,751	$	169,217	$	(36,072)	$	133,145
Backlog	0.4	75,194		(71,101)		4,093		63,825		(47,802)		16,023
Trade names	1.4	40,926		(25,185)		15,741		37,411		(12,643)		24,768
Total		$	314,846	$	(154,261)	$	160,585	$	270,453	$	(96,517)	$	173,936

Estimated amortization expense for the succeeding five years and beyond

Estimated amortization expense for the succeeding five fiscal years and beyond is as follows (in thousands):

	Amount
2025	$	36,198
2026	24,332
2027	17,625
2028	17,116
2029	16,204
Beyond	49,110
Total	$	160,585