Amount of repayment of acquiree line of credit as part of consideration for the business combination.

No definition available.

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Amount of repayment of acquiree term loan as part of consideration for the business combination.

+ References

No definition available.

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- Definition

Fair value adjustment recognized during the period for joint ventures in connection with business combination.

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No definition available.

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Fair value adjustment recognized during the period for noncontrolling interests in connection with business combination.

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No definition available.

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

+ References

No definition available.

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- Definition

Amount of billings in excess of costs on uncompleted contracts assumed at the acquisition date.

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No definition available.

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- Definition

Represents the margin fair value liability of acquisition.

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No definition available.

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Represents the numbers of acquisitions.

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No definition available.

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- Definition

Represents the number of years the billings in excess of costs on uncompleted contracts majority liability will be recognized as revenue.

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No definition available.

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- Definition

Represents the revenue and related income from operations on a percentage of completion bases.

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No definition available.

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Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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No definition available.

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

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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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.

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No definition available.

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

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Business Acquisitions, Goodwill and Intangible Assets - URS Acquisition (Details) $ in Millions		3 Months Ended		12 Months Ended
	Oct. 17, 2014 USD ($)	Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($)	Sep. 30, 2017 USD ($) item
Business acquisition
Number of acquisition \| item		1		2
Total consideration		$ 5.6		$ 164.4
Amortization of intangible assets		23.7	$ 25.4
URS
Business acquisition
Ownership acquired (in percent)	100.00%
Total consideration	$ 2,300.0
Consideration paid by issuing stock	1,600.0
Senior notes assumed, net of Company repayments	400.0
Repayment of acquiree term loan as part of consideration	600.0
Repayment of acquiree line of credit as part of consideration	100.0
Accrued expenses and other current liabilities	240.0
Amortization of intangible assets of acquiree for the period		18.2	20.9
Fair value adjustment of joint ventures		1.9	2.0
Fair value adjustment of noncontrolling interests		(2.1)	(2.1)
Fair value of margin liability	$ 149.1
Carrying value margin fair value liability		7.5		$ 8.6
Margin liability recognition period ( in years)	2 years
Revenue and related income from operations related to margin fair value liability		$ 1.1	$ 1.6
URS \| Customer relationships, contracts and backlog
Business acquisition
Acquired backlog and customer relationship assets	$ 973.8
URS \| Customer relationships, contracts and backlog \| Minimum
Business acquisition
Useful life (in years)	1 year
URS \| Customer relationships, contracts and backlog \| Maximum
Business acquisition
Useful life (in years)	11 years
URS \| Customer relationships, contracts and backlog \| Weighted Average
Business acquisition
Useful life (in years)	3 years