Business Combination, Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Jan. 07, 2014 WANDL, Inc, [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired				100.00%
Consideration transferred				$ 28.7
Intangible assets acquired				17.8
Goodwill	4,071.3		4,057.7	13.6
Net liabilities assumed				(2.7)
Share-based awards assumed, fair value				34.9
Business combination, acquisition related costs	$ 0.6	$ 0.1

Share-based awards assumed, fair value

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

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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.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of liabilities assumed 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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