Business Combination, Conversion of Loans To Equity Ownership

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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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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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.

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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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Acquisitions and Strategic Investments (Narrative) (Details) - USD ($) $ in Millions				1 Months Ended
	Jan. 03, 2019	Mar. 14, 2018	Feb. 21, 2018	Apr. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 13, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill					$ 103.0	$ 44.5		$ 0.0
Periscope Acquisition
Business Acquisition [Line Items]
Cash paid for acquisitions	$ 121.0
Preliminary purchase price	134.0
Acquired cash	9.8
Equity issued, value	3.2
Identifiable finite-lived intangibles acquired	69.8
Goodwill	58.5
Goodwill, tax deductible	$ 52.7
Periscope Acquisition \| Minimum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)	5 years
Periscope Acquisition \| Maximum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)	6 years
Ivie and Associates
Business Acquisition [Line Items]
Cash paid for acquisitions			$ 90.0
Potential earn-out			16.0
Preliminary purchase price			105.4
Acquired cash			13.6
Estimated future cash payments			15.4
First year earn-out payment				$ 5.3
Identifiable finite-lived intangibles acquired			79.6
Goodwill			28.3
Goodwill, tax deductible			$ 26.4
Ivie and Associates \| Minimum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)			3 years
Ivie and Associates \| Maximum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)			8 years
Rise Interactive
Business Acquisition [Line Items]
Cash paid for acquisitions		$ 8.7
Preliminary purchase price		48.5
Acquired cash		$ 13.7
Noncontrolling interest, ownership percentage by noncontrolling owners		43.00%
Identifiable finite-lived intangibles acquired		$ 23.1
Goodwill		$ 26.3
Parent ownership percentage		57.00%					19.00%
Conversion of loans to equity ownership		$ 9.3
Rise Interactive \| Minimum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)		5 years
Rise Interactive \| Maximum
Business Acquisition [Line Items]
Estimated finite-lived intangible assets, useful life (in years)		6 years