Goodwill and Intangible Assets (Tables)

12 Months Ended

Oct. 01, 2023

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 (in thousands):

	GSG		CIG		Total
Balance at October 3, 2021	$	538,433	$	570,145	$	1,108,578
Goodwill reallocation	(51,497)		51,497		—
Acquisitions	42,365		26,318		68,683
Translation and other	(10,199)		(56,650)		(66,849)
Balance at October 2, 2022	519,102		591,310		1,110,412
Acquisitions	138,380		621,496		759,876
Translation and other	2,460		7,496		9,956
Balance at October 1, 2023	$	659,942	$	1,220,302	$	1,880,244

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
	October 1, 2023							October 2, 2022
	Weighted- Average Remaining Life (in years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	9.4	$	169,217	$	(36,072)	$	133,145	$	41,676	$	(21,092)	$	20,584
Backlog	0.9	63,825		(47,802)		16,023		33,286		(29,990)		3,296
Trade names	2.4	37,411		(12,643)		24,768		12,711		(7,428)		5,283
Total		$	270,453	$	(96,517)	$	173,936	$	87,673	$	(58,510)	$	29,163

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
2024	$	42,180
2025	28,032
2026	19,922
2027	13,861
2028	13,352
Beyond	56,589
Total	$	173,936