Income Taxes (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Adjustment for IRS Exam Settlement [Line Items]
Deferred Tax Assets, Net	$ 68.8	$ 65.7
Cash Cash Equivalents Short term Investments Subject To Repatriation Tax Effect	328.0
Unrecognized Tax Benefits Subject To Audit	$ 17.1

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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