Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in the 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 1, 2023	$	659,942	$	1,220,302	$	1,880,244
Translation adjustments	2,731		40,171		42,902
Balance at December 31, 2023	$	662,673	$	1,260,473	$	1,923,146

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):

	Period Ended
	December 31, 2023							October 1, 2023
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	9.2	$	175,486	$	(41,572)	$	133,914	$	169,217	$	(36,072)	$	133,145
Backlog	0.8	66,052		(54,960)		11,092		63,825		(47,802)		16,023
Trade names	2.1	39,084		(15,956)		23,128		37,411		(12,643)		24,768
Total		$	280,622	$	(112,488)	$	168,134	$	270,453	$	(96,517)	$	173,936

Estimated amortization expense for the remainder of the fiscal year and the succeeding years

Estimated amortization expense for the remainder of fiscal 2024 and succeeding years is as follows (in

thousands):

	Amount
2024 (remaining)	$	31,021
2025	29,138
2026	20,563
2027	14,440
2028	13,930
Beyond	59,042
Total	$	168,134