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Business Combinations, Separately Recognized Transactions Table (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Business Combination, Acquisition Related Costs			$ 40.7
Severance Costs			5.6
Business Combination, Integration Related Costs			29.0
Business Combination, Acquisition & Integration Related Costs			75.3
Restructuring and acquisition-related costs	$ 22.8	$ 0.0	90.5	$ 0.0
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost			$ 20.0

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Business Combination, Acquisition, Severance & Integration Related Costs

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Costs incurred for restructuring initiatives as well as expenses directly related to acquisition activity.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
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-Section 45
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-Publisher FASB
-Name Accounting Standards Codification
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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

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