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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2012
Fair Value Measurements |
Schedule of assets and liabilities measured on a recurring basis, at fair value |
|  | June 30, 2012 |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
Treasury bills |  | $ | 117.1 |  | $ | 83.8 |  | $ | — |  | $ | 200.9 |
FDIC insured corporate bonds |  | 61.0 |  | — |  | — |  | 61.0 |
Government Agency Securities |  | 43.7 |  | 106.3 |  | — |  | 150.0 |
Total |  | $ | 221.8 |  | $ | 190.1 |  | $ | — |  | $ | 411.9 |
|  | December 31, 2011 |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
Treasury bills |  | $ | 70.2 |  | $ | 20.0 |  | $ | — |  | $ | 90.2 |
FDIC insured corporate bonds |  | 114.8 |  | — |  | — |  | 114.8 |
Government Agency Securities |  | 88.6 |  | 81.2 |  | — |  | 169.8 |
Money market instruments |  | — |  | 0.2 |  | — |  | 0.2 |
Total |  | $ | 273.6 |  | $ | 101.4 |  | $ | — |  | $ | 375.0 |
Schedule of assets and liabilities measured on a nonrecurring basis, at fair value |
|  | June 30, 2012 |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
Property,plant and equipment, net |  | $ | — |  | $ | — |  | $ | 97.1 |  | $ | 97.1 |
Goodwill |  | — |  | — |  | 55.8 |  | 55.8 |
Intangible assets, net |  | — |  | — |  | 23.5 |  | 23.5 |
Total |  | $ | — |  | $ | — |  | $ | 176.4 |  | $ | 176.4 |
|  | December 31, 2011 |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
Property,plant and equipment, net |  | $ | — |  | $ | — |  | $ | 86.1 |  | $ | 86.1 |
Goodwill |  | — |  | — |  | 55.8 |  | 55.8 |
Intangible assets, net |  | — |  | — |  | 25.9 |  | 25.9 |
Total |  | $ | — |  | $ | — |  | $ | 167.8 |  | $ | 167.8 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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