Business acquisitions pro forma income tax expense (benefit).

No definition available.

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- Definition

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Increase (Decrease) in Accrued Liabilities

+ References

No definition available.

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- Definition

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Increase (Decrease) in Long Term Assets

+ References

No definition available.

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- Definition

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Increase (Decrease) in Receivables

+ References

No definition available.

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed prepayment penalty.

+ References

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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-Publisher FASB
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-SubTopic 30
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- Definition

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.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial liabilities assumed in connection with a business combination for which the initial accounting was incomplete.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Business Combinations - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions			1 Months Ended	4 Months Ended	9 Months Ended		15 Months Ended
	Jun. 12, 2019	Dec. 15, 2017	Jun. 28, 2019	Mar. 30, 2018	Jun. 28, 2019	Jun. 29, 2018	Dec. 28, 2018	Sep. 28, 2018
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)			$ 1		$ 1			$ 1
Goodwill recognized expected to be deductible for tax purposes			$ 136,800,000		$ 136,800,000
Revenue of acquiree since acquisition date, actual			23,900,000
Earnings of acquiree since acquisition date, actual			15,500,000
Pre-tax transaction costs			$ 12,700,000		$ 12,700,000
Customer relationships, contracts and backlog
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					12 years
Developed Technology
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					12 years
Noncompete Agreements
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					1 year
KeyW Holding Corporation
Business Acquisition [Line Items]
Percentage of outstanding shares of common and preferred stock acquired	100.00%
Consideration transferred	$ 902,600,000
Business combination consideration paid in cash	604,200,000
Business combination, cash acquired	29,100,000
Business combination prepayment penalty	22,600,000
Long-term debt	$ 275,800,000
Business acquisitions pro forma income tax expense (benefit)					$ 14,900,000	$ 88,100,000
CH2M HILL Companies, Ltd.
Business Acquisition [Line Items]
Percentage of outstanding shares of common and preferred stock acquired		100.00%
Business combination consideration paid in cash		$ 1,800,000,000
Business combination, cash acquired		315,200,000
Business combination consideration equity issued		$ 1,400,000,000
Business combination consideration equity issued, shares		20.7
Long-term debt		$ 706,000,000.0
Goodwill recognized expected to be deductible for tax purposes		0
Financial liabilities		404,700,000
Decrease in receivables							$ 4,000,000.0
Increase in accrued liabilities							11,500,000
Increase in miscellaneous long-term assets							20,700,000
Goodwill increase in the period							$ 28,100,000
Revenue of acquiree since acquisition date, actual				$ 2,500,000,000
Earnings of acquiree since acquisition date, actual				87,900,000
Restructuring and transaction costs				$ 93,300,000
Business acquisitions pro forma income tax expense (benefit)						$ 180,400,000
CH2M HILL Companies, Ltd. \| Customer relationships, contracts and backlog
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					10 years
CH2M HILL Companies, Ltd. \| Customer relationships, contracts and backlog \| Minimum
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life					9 years
CH2M HILL Companies, Ltd. \| Customer relationships, contracts and backlog \| Maximum
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life					11 years
CH2M HILL Companies, Ltd. \| Other Intangible Assets and Liabilities
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life					10 years
CH2M HILL Companies, Ltd. \| Revolving Credit Facility and Second Lien Notes
Business Acquisition [Line Items]
Business combination prepayment penalty		20,000,000.0
Long-term debt		$ 700,000,000