Working capital excess of target working capital

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.

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- Definition

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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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

Name of the acquired entity.

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- Definition

Per basic share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

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- Definition

Per diluted share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.

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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 after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

+ References

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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- Definition

This element represents a description of the primary reason for the business combination which may consist of general categories such as top-line growth, synergistic benefits, market share, and diversification and the more detailed factors that might apply.

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- Definition

Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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- Definition

Amount after accumulated impairment loss 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

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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- Definition

The weighted average number of shares or units and dilutive common stock or unit equivalents outstanding in the calculation of proforma diluted earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

+ References

No definition available.

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- Definition

The weighted average number of shares (units) outstanding in the calculation of pro forma basic earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

+ References

No definition available.

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Acquisitions Business Combinations Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions			3 Months Ended	6 Months Ended
	Jan. 25, 2019	Apr. 02, 2018	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 775.0
Cash paid for acquisitions, net of cash acquired				$ 48.5	$ 760.5
Goodwill				$ 1,445.6		$ 1,421.1
DHA
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Jan. 25, 2019
Business Acquisition, Name of Acquired Entity	DHA Group, Inc.
Business Acquisition, Description of Acquired Entity	headquartered in Washington, D.C.
Working capital excess of target working capital	$ 2.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 19.0
ECS
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition		Apr. 02, 2018
Business Acquisition, Name of Acquired Entity		ECS Federal, LLC
Business Acquisition, Description of Acquired Entity		headquartered in Fairfax, Virginia
Business Combination, Reason for Business Combination		The ECS acquisition allows the Company to compete in the Federal IT and professional services sector
Goodwill		$ 528.2
Business Acquisition, Goodwill, Expected Tax Deductible Amount		514.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 195.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		11 years
Business Acquisition, Pro Forma Revenue			$ 878.5		1,712.7
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax			39.9		74.5
Business Acquisition, Pro Forma Net Income (Loss)			$ 39.8		$ 74.3
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic			$ 0.76		$ 1.42
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted			$ 0.75		$ 1.40
Weighted Average Basic Shares Outstanding, Pro Forma			52.3		52.3
Pro Forma Weighted Average Shares Outstanding, Diluted			53.1		53.0