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Significant Accounting Policies Cash and Cash Equivalents (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Significant Accounting Policies [Abstract] |  |
Restricted Cash and Cash Equivalents, Noncurrent | $ 11.4 | $ 12.6

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- Definition Significant Accounting Policies [Abstract] + References No definition available. + Details
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- Definition Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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