Segment Information (Tables)

12 Months Ended

Sep. 27, 2024

Segment Reporting [Abstract]

Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment

The following tables present total revenues and segment operating profit from continuing operations for each reportable segment (in thousands) and includes a reconciliation of segment operating profit to total U.S. GAAP operating profit by including Restructuring and other charges (as defined in Note 17-Restructuring and Other Charges) and

transaction and integration costs (in thousands).

	For the Years Ended
	September 27, 2024		September 29, 2023		September 30, 2022
Revenues from External Customers:
Infrastructure & Advanced Facilities	$	10,323,255	$	9,693,276	$	8,663,778
PA Consulting	1,177,686		1,158,144		1,119,296
Total	$	11,500,941	$	10,851,420	$	9,783,074

	For the Years Ended
	September 27, 2024		September 29, 2023		September 30, 2022
Segment Operating Profit:
Infrastructure & Advanced Facilities (1)	$	632,276	$	585,392	$	500,136
PA Consulting	239,250		237,003		232,225
Total Segment Operating Profit	871,526		822,395		732,361
Restructuring, Transaction and Other Charges (2)	(179,090)		(145,911)		(192,477)
Total U.S. GAAP Operating Profit	692,436		676,484		539,884
Total Other (Expense) Income, net (3)	84,850		(155,509)		(62,387)
Earnings from Continuing Operations Before Taxes	$	777,286	$	520,975	$	477,497

(1)	Operating profit for Infrastructure & Advanced Facilities includes intangibles amortization of $152.7 million, $147.2 million and $149.8 million for the years ended September 27, 2024, September 29, 2023 and September 30, 2022, respectively. Additionally, fiscal 2023 included approximately $15.0 million in net favorable impacts from cost reductions compared to the prior year period, which was associated mainly with net favorable impacts during first quarter from changes in employee benefit programs of $41.0 million offset by approximately $26.0 million in higher spend in company technology platforms and other personnel and corporate cost increases.
(2)	The years ended September 27, 2024, and September 29, 2023 include $163.4 million and $61.1 million respectively, in restructuring and other charges (mainly professional services and employee separation costs) primarily related to the Separation Transaction and $6.4 million and $14.3 million respectively, in restructuring and other charges relating to the Company's investment in PA Consulting (primarily employee separation costs). Included in the years ended September 29, 2023 and September 30, 2022 were $46.7 million and $76.1 million, respectively, in charges associated mainly with real estate impairments. Included in the year ended September 30, 2022 is $91.3 million pre-tax related to the final settlement of the Legacy CH2M Matter and net of previously recorded reserves and approximately $27 million in third party recoveries that was recorded as receivables reducing SG&A.
(3)	The year ended September 27, 2024 included $186.9 million in mark-to-market gains associated with our investment in Amentum stock in connection with the Separation Transaction and a $35.2 million realized gain on interest rate swaps settled during the fourth quarter of fiscal 2024. The year ended September 30, 2022 included a gain of $8.7 million related to lease terminations. The increase in net interest expense from fiscal 2022 to fiscal 2023 is due primarily to higher interest rates.