Amount of consideration transferred, consisting of acquisition-date cost basis of assets transferred by the acquirer.

No definition available.

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Amount of consideration transferred, consisting of acquisition-date cost basis of assets transferred by the acquirer

+ References

No definition available.

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- Definition

Business Combination, Step Acquisition, Equity Interest in Acquiree, Negotiated Fair Value

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No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
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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

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

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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-Publisher FASB
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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Significant Business Transactions and Events - Acquisition of BFDS (Details) - USD ($) shares in Millions, $ in Millions		12 Months Ended
	Mar. 30, 2017	Dec. 31, 2017	Mar. 27, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 799.1		$ 516.4	$ 458.3
Boston Financial Data Services, Inc.
Business Acquisition [Line Items]
Ownership percentage	50.00%
Equity issued (in shares)	2.0
Fair value of common stock used to acquire the remaining equity interests in BFDS, certain investments and real estate	$ 163.4
Cost basis for tax purposes	1.1
Costs basis for book purposes	16.8
Negotiated fair value	157.6
Estimated fair value of DST's previously-held equity interests	151.1
Remeasurement gain	56.0
Realized investment gains		$ 146.6
Goodwill	68.7
Goodwill, expected tax deductible amount	$ 0.0
International Financial Data Services L.P.
Business Acquisition [Line Items]
Ownership percentage	50.00%	50.00%	50.00%