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Financial Instruments (Details Textual 2) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 Investment
Stromedix, Inc. |  |  |
Business Acquisition |  |  |
Recognized gain |  | $ 9.0 |
Strategic Investments |  |  |
Business Acquisition |  |  |
Strategic investment portfolio | 56.9 | 64.2 |
Venture capital investments | 33.1 | 29.3 |
Cost basis of equity securities of certain privately-held companies and venture capital funds | 23.8 | 34.9 |
Net gains (losses) realized | 14.4 | 6.5 | 7.3
Number of strategic investments sold |  |  | 4
Selling price of strategic investments |  |  | 40.6
Gain (loss) from sale of strategic equity investments |  |  | 13.5
Portola Pharmaceuticals Member | Strategic Investments |  |  |
Business Acquisition |  |  |
Gain (loss) from sale of strategic equity investments | $ 7.1 |  |

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- Definition Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. + 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594 + Details
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