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3. Fair Value Measurements 3. Contingent Consideration (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 3 Months Ended
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Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member] | Oct. 04, 2011 QuantaLife [Member] | Mar. 31, 2012 Credit Adjusted Discount Rates Lower [Member] QuantaLife [Member] | Mar. 31, 2012 Credit Adjusted Discount Rate Higher [Member] QuantaLife [Member] | Mar. 31, 2012 Projected Volatility of Growth Rates Lower [Member] QuantaLife [Member] | Mar. 31, 2012 Projected Volatility of Growth Rates Higher [Member] QuantaLife [Member] | Mar. 31, 2012 Market Price of Risk [Member] QuantaLife [Member] | Mar. 31, 2012 Probablity [Member] QuantaLife [Member] | Mar. 31, 2012 Risk-Adjusted Discount Rate [Member] QuantaLife [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration, Potential Cash Payment |  |  | $ 48 |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration, at Fair Value beginning of period | 24.1 | [1] | 24.1 |  |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | 0.6 |  |  |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration, at Fair Value end of period | $ 24.7 | [1] | $ 24.1 |  |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Significant Inputs |  |  |  | 0.0082 | .0138 | .075 | .15 | .004 | .95 | .009
[1] | Contingent consideration liability is included in the following accounts in the Condensed Consolidated Balance Sheet (in millions): March 31, 2012 December 31, 2011Other current liabilities$14.9 $8.5Other long-term liabilities9.8 15.6 Total$24.7 $24.1

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- Definition Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6910684&loc=d3e4570-128470 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6411-128476 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 30 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=6910544&loc=d3e4243-128469 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 40 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6910732&loc=d3e4805-128471 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 29, 30, 41, 42, 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(3),(c)(1) -URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e6927-128479 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 25 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6946367&loc=d3e3642-128468 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 30 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6910544&loc=d3e4237-128469 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 65 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 25 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=6946367&loc=d3e3629-128468 + Details
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