Other non operating income expense excluding disposal group not discontinued operation gain loss on disposal.

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- Definition

Restructuring and other charges.

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The amount of amortization of deferred charges applied against earnings during the period.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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Amount of revenue in continuing operations related to continuing involvement in a discontinued operation after disposal that before the disposal was eliminated as intra-entity transactions.

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Amount of other expense attributable to disposal group, including, but not limited to, discontinued operation.

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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Amount of expense classified as other.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Information - Schedule of Total Revenues, Segment Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Dec. 28, 2018	Mar. 27, 2020	Mar. 29, 2019
Segment Reporting Information [Line Items]
Revenues	$ 3,427,180	$ 3,091,596		$ 6,787,229	$ 6,175,384
Total Segment Operating Profit	167,778	102,681		319,125	215,810
Restructuring, Transaction and Other Charges	(44,381)	(93,938)		(95,067)	(141,171)
Total Other (Expense) Income, net	(344,583)	9,151		(241,759)	(11,789)
(Loss) Earnings from Continuing Operations Before Taxes	(176,805)	111,832		77,366	204,021
Other expense		6,400			12,800
Amortization of intangible assets				43,939
Fair value adjustments related to investment in Worley stock	(341,000)			(241,900)
Settlement gain (loss)	0	32,449		(2,651)	34,621
CH2M Hill and OMI Retiree Medical Plans
Segment Reporting Information [Line Items]
Settlement gain (loss)		32,400	$ 2,200
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Profit	273,375	246,520		542,126	478,130
Corporate
Segment Reporting Information [Line Items]
Other Corporate Expenses	(61,216)	(49,901)		(127,934)	(121,149)
Corporate \| Other Expense \| CH2M HILL Companies, Ltd.
Segment Reporting Information [Line Items]
Amortization of deferred financing fees	100	500		700	1,000
Gain (loss) related to settlement		32,400		(2,100)
Corporate \| Other Expense \| CH2M HILL Companies, Ltd. \| United States
Segment Reporting Information [Line Items]
Gain (loss) related to settlement	0	32,400		2,700	34,600
Critical Mission Solutions \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,243,378	1,059,508		2,425,835	2,094,537
Total Segment Operating Profit	84,293	73,831		174,715	145,982
People & Places Solutions \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	2,183,802	2,032,088		4,361,394	4,080,847
Total Segment Operating Profit	189,082	172,689		367,411	332,148
Worley
Segment Reporting Information [Line Items]
TSA related income	2,200			14,200
Worley \| Corporate \| Other Expense
Segment Reporting Information [Line Items]
Amortization of intangible assets	$ 22,100	$ 18,700		$ 43,900	$ 37,300