Acquisitions Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	0 Months Ended
Sep. 30, 2014	Sep. 30, 2014 Customer Relationships [Member]	Aug. 01, 2014 Intersystems Holdings, Inc. [Member]	Aug. 01, 2014 Intersystems Holdings, Inc. [Member] Customer Relationships [Member]	Aug. 01, 2014 Intersystems Holdings, Inc. [Member] Technology-Based Intangible Assets [Member]	Aug. 01, 2014 Intersystems Holdings, Inc. [Member] Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 46.3	$ 28.0	$ 46.3	$ 28.0	$ 11.3	$ 7.0
Intangible assets acquired, weighted average useful life				15 years	15 years	16 years

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Data Type:	xbrli:durationItemType
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