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3. Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2012
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] |
Discussion of Current Derivative Risk Management [Table Text Block] | The following is a summary of our forward foreign currency exchange contracts (in millions):
| December 31,
| 2012
Contracts maturing in January through March 2013 to sell foreign currency: |
Notional value | $ | 67.2 |
Unrealized loss | $ | (0.2 | )
Contracts maturing in January through March 2013 to purchase foreign currency: |
Notional value | $ | 389.1 |
Unrealized gain | $ | 0.4 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] | The following table provides a reconciliation of the Level 3 contingent consideration liabilities measured at fair value based on third party valuations for the year ended December 31, 2012 (in millions):
| 2012
January 1 | $ | 24.1 |
Decrease in fair value of contingent consideration for QuantaLife included in Selling, general and administrative expense | (16.1 | )
Total QuantaLife | 8.0 |
Acquisition of cell sorting system | 44.6 |
December 31 | $ | 52.6 |
Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block] | The following table provides quantitative information about Level 3 inputs for fair value measurement of our contingent consideration liabilities as of December 31, 2012. Significant increases or decreases in these inputs in isolation could result in a significantly lower or higher fair value measurement.
|  |  | Range
| Valuation Technique | Unobservable Input | From | To
QuantaLife | Probability-weighted income approach | Sales milestone: |  |
|  | Credit adjusted discount rates | 0.64% | 1.03%
|  | Projected volatility of growth rate | 12.4% | 30%
|  | Market price of risk | 0.4% | N/A
Cell sorting system | Probability-weighted income approach | Sales milestone: |  |
|  | Credit adjusted discount rates | 1.0% | 1.7%
|  | Projected volatility of sales | 18.0% |
|  | Market price of risk | 1.4% | N/A
|  | Development milestone: |  |
|  | Probability | 99% | 100%
|  | Risk-adjusted discount rate | 0.8% | 1.0%
Schedule of Derivative Instruments [Table Text Block] |
Financial assets and liabilities carried at fair value on a recurring basis | Financial assets and liabilities carried at fair value and measured on a recurring basis as of December 31, 2012 are classified in the hierarchy as follows (in millions):
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets Carried at Fair Value: |  |  |  |  |  |  |
Cash equivalents (a): |  |  |  |  |  |  |
Commercial paper | $ | — |  |  | $ | 52.8 |  |  | $ | — |  |  | $ | 52.8 |
Foreign time deposits | 10.1 |  |  | — |  |  | — |  |  | 10.1 |
U.S. government sponsored agencies | — |  |  | 1.3 |  |  | — |  |  | 1.3 |
Money market funds | 5.5 |  |  | — |  |  | — |  |  | 5.5 |
Total cash equivalents | 15.6 |  |  | 54.1 |  |  | — |  |  | 69.7 |
Available-for-sale investments (b): |  |  |  |  |  |  |
Corporate debt securities | — |  |  | 240.6 |  |  | — |  |  | 240.6 |
Foreign brokered certificates of deposit | — |  |  | 0.4 |  |  | — |  |  | 0.4 |
U.S. government sponsored agencies | — |  |  | 92.7 |  |  | — |  |  | 92.7 |
Foreign government obligations | — |  |  | 5.6 |  |  | — |  |  | 5.6 |
Municipal obligations | — |  |  | 12.1 |  |  | — |  |  | 12.1 |
Marketable equity securities | 242.1 |  |  | — |  |  | — |  |  | 242.1 |
Asset-backed securities | — |  |  | 82.2 |  |  | — |  |  | 82.2 |
Total available-for-sale investments | 242.1 |  |  | 433.6 |  |  | — |  |  | 675.7 |
Forward foreign exchange contracts (c) | — |  |  | 1.1 |  |  | — |  |  | 1.1 |
Total financial assets carried at fair value | $ | 257.7 |  |  | $ | 488.8 |  |  | $ | — |  |  | $ | 746.5 |
Financial Liabilities Carried at Fair Value: |  |  |  |  |  |  |
Forward foreign exchange contracts (d) | $ | — |  |  | $ | 0.8 |  |  | $ | — |  |  | $ | 0.8 |
Contingent consideration (e) | — |  |  | — |  |  | 52.6 |  |  | 52.6 |
Total financial liabilities carried at fair value | $ | — |  |  | $ | 0.8 |  |  | $ | 52.6 |  |  | $ | 53.4 |
Financial assets and liabilities carried at fair value and measured on a recurring basis as of December 31, 2011 are classified in the hierarchy as follows (in millions):
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets Carried at Fair Value: |  |  |  |  |  |  |
Cash equivalents (a): |  |  |  |  |  |  |
Commercial paper | $ | — |  |  | $ | 106.0 |  |  | — |  |  | $ | 106.0 |
Bonds | — |  |  | 8.6 |  |  | — |  |  | 8.6 |
Foreign time deposits | 21.6 |  |  | — |  |  | — |  |  | 21.6 |
Money market funds | 58.3 |  |  | — |  |  | — |  |  | 58.3 |
Total cash equivalents | 79.9 |  |  | 114.6 |  |  | — |  |  | 194.5 |
Available-for-sale investments (b): |  |  |  |  |  |  |
Corporate debt securities | — |  |  | 170.6 |  |  | — |  |  | 170.6 |
Foreign brokered certificates of deposit | — |  |  | 1.8 |  |  | — |  |  | 1.8 |
U.S. government sponsored agencies | — |  |  | 36.9 |  |  | — |  |  | 36.9 |
Foreign government obligations | — |  |  | 5.7 |  |  | — |  |  | 5.7 |
Municipal obligations | — |  |  | 5.0 |  |  | — |  |  | 5.0 |
Marketable equity securities | 134.8 |  |  | — |  |  | — |  |  | 134.8 |
Asset-backed securities | — |  |  | 11.2 |  |  | — |  |  | 11.2 |
Total available-for-sale investments | 134.8 |  |  | 231.2 |  |  | — |  |  | 366.0 |
Forward foreign exchange contracts (c) | — |  |  | 0.8 |  |  | — |  |  | 0.8 |
Total financial assets carried at fair value | $ | 214.7 |  |  | $ | 346.6 |  |  | — |  |  | $ | 561.3 |
Financial Liabilities Carried at Fair Value: |  |  |  |  |  |  |
Forward foreign exchange contracts (d) | $ | — |  |  | $ | 1.2 |  |  | — |  |  | $ | 1.2 |
Contingent consideration (e) | — |  |  | — |  |  | 24.1 |  |  | 24.1 |
Total financial liabilities carried at fair value | $ | — |  |  | $ | 1.2 |  |  | $ | 24.1 |  |  | $ | 25.3 |
(a) | Cash equivalents are included in Cash and cash equivalents in the Consolidated Balance Sheets.
(b) | Available-for-sale investments are included in the following accounts in the Consolidated Balance Sheets (in millions):
| December 31, 2012 |  | December 31, 2011
Short-term investments | $ | 457.7 |  |  | $ | 238.8 |
Other assets | 218.0 |  |  | 127.2 |
Total | $ | 675.7 |  |  | $ | 366.0 |
(c) | Forward foreign exchange contracts in an asset position are included in Prepaid expenses, taxes and other current assets in the Consolidated Balance Sheets.
(d) | Forward foreign exchange contracts in a liability position are included in Other current liabilities in the Consolidated Balance Sheets.
(e) | Contingent consideration liability is included in the following accounts in the Consolidated Balance Sheet (in millions):
| December 31, 2012 |  | December 31, 2011
Other current liabilities | $ | 27.3 |  |  | $ | 8.5 |
Other long-term liabilities | 25.3 |  |  | 15.6 |
Total | $ | 52.6 |  |  | $ | 24.1 |
Schedule of available-for-sale investments | Available-for-sale investments consist of the following (in millions):
| December 31, 2012
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Short-term investments: |  |  |  |  |  |  |
Corporate debt securities | $ | 239.3 |  |  | $ | 1.4 |  |  | $ | (0.1 | ) |  | $ | 240.6 |
Foreign brokered certificates of deposit | 0.4 |  |  | — |  |  | — |  |  | 0.4 |
Municipal obligations | 12.0 |  |  | 0.1 |  |  | — |  |  | 12.1 |
Asset-backed securities | 81.6 |  |  | 0.4 |  |  | (0.1 | ) |  | 81.9 |
U.S. government sponsored agencies | 92.5 |  |  | 0.3 |  |  | (0.1 | ) |  | 92.7 |
Foreign government obligations | 5.4 |  |  | — |  |  | — |  |  | 5.4 |
Marketable equity securities | 24.1 |  |  | 0.7 |  |  | (0.2 | ) |  | 24.6 |
| 455.3 |  |  | 2.9 |  |  | (0.5 | ) |  | 457.7 |
Long-term investments: |  |  |  |  |  |  |
Marketable equity securities | 54.5 |  |  | 163.0 |  |  | — |  |  | 217.5 |
Asset-backed securities | 0.4 |  |  | — |  |  | (0.1 | ) |  | 0.3 |
Foreign government obligations | 0.2 |  |  | — |  |  | — |  |  | 0.2 |
| 55.1 |  |  | 163.0 |  |  | (0.1 | ) |  | 218.0 |
Total | $ | 510.4 |  |  | $ | 165.9 |  |  | $ | (0.6 | ) |  | $ | 675.7 |
| December 31, 2011
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
Short-term investments: |  |  |  |  |  |  |
Corporate debt securities | $ | 170.9 |  |  | $ | 0.1 |  |  | $ | (0.4 | ) |  | $ | 170.6 |
Foreign brokered certificates of deposit | 1.8 |  |  | — |  |  | — |  |  | 1.8 |
Municipal obligations | 5.0 |  |  | — |  |  | — |  |  | 5.0 |
Asset-backed securities | 10.8 |  |  | — |  |  | — |  |  | 10.8 |
U.S. government sponsored agencies | 36.8 |  |  | 0.1 |  |  | — |  |  | 36.9 |
Foreign government obligations | 5.4 |  |  | — |  |  | — |  |  | 5.4 |
Marketable equity securities | 7.7 |  |  | 0.6 |  |  | — |  |  | 8.3 |
| 238.4 |  |  | 0.8 |  |  | (0.4 | ) |  | 238.8 |
Long-term investments: |  |  |  |  |  |  |
Marketable equity securities | 57.2 |  |  | 70.0 |  |  | (0.7 | ) |  | 126.5 |
Asset-backed securities | 0.5 |  |  | — |  |  | (0.1 | ) |  | 0.4 |
Foreign government obligations | 0.3 |  |  | — |  |  | — |  |  | 0.3 |
| 58.0 |  |  | 70.0 |  |  | (0.8 | ) |  | 127.2 |
Total | $ | 296.4 |  |  | $ | 70.8 |  |  | $ | (1.2 | ) |  | $ | 366.0 |
Summary of investments with gross unrealized losses and the associated fair value | The following is a summary of investments with gross unrealized losses and the associated fair value (in millions):
| December 31, 2012 |  | December 31, 2011
Fair value | $ | 99.3 |  |  | $ | 77.8 |
Gross unrealized losses for investments in a loss position 12 months or more | $ | 0.1 |  |  | $ | 0.4 |
Gross unrealized losses for investments in a loss position less than 12 months | $ | 0.5 |  |  | $ | 0.8 |
Summary of amortized cost and estimated fair value of debt securities by contractual maturity date | The following is a summary of the amortized cost and estimated fair value of our debt securities at December 31, 2012 by contractual maturity date (in millions):
| Amortized Cost |  | Estimated Fair Value
Mature in less than one year | $ | 159.2 |  |  | $ | 159.3 |
Mature in one to five years | 204.8 |  |  | 205.6 |
Mature in more than five years | 67.8 |  |  | 68.7 |
Total | $ | 431.8 |  |  | $ | 433.6 |
Estimated fair value of financial instruments | The estimated fair value of our financial instruments and the level of the fair value hierarchy within which the fair value measurement is categorized are as follows (in millions):
| December 31, 2012 |  | December 31, 2011
| Carrying Amount |  | Estimated Fair Value |  | Fair Value Hierarchy Level |  | Carrying Amount |  | Estimated Fair Value |  | Fair Value Hierarchy Level
Other assets | $ | 293.6 |  |  | $ | 497.8 |  |  | 1 |  | $ | 186.6 |  |  | $ | 252.4 |  |  | 1
Total long-term debt, excluding leases and current maturities | $ | 720.0 |  |  | $ | 778.4 |  |  | 2 |  | $ | 719.1 |  |  | $ | 759.1 |  |  | 2

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