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Intangible Assets and Goodwill | 9 Months Ended
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Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets and Goodwill | Intangible Assets and Goodwill In connection with our acquisition of Stromedix in March 2012, we acquired IPR&D programs with an estimated fair value of $219.2 million and recorded $51.6 million of goodwill, which represents the excess of the purchase price over the fair value of the net assets acquired. For a more detailed description of this transaction, please read Note 2, Acquisitions to these condensed consolidated financial statements. Intangible Assets Intangible assets, net of accumulated amortization, impairment charges and adjustments, are summarized as follows:
|  |  | As of September 30, 2012 |  | As of December 31, 2011
(In millions) | Estimated Life |  | Cost |  | Accumulated Amortization |  | Net |  | Cost |  | Accumulated Amortization |  | Net
Out-licensed patents | 13-23 years |  | $ | 578.0 |  |  | $ | (413.6 | ) |  | $ | 164.4 |  |  | $ | 578.0 |  |  | $ | (391.3 | ) |  | $ | 186.7 |
Core developed technology | 15-23 years |  | 3,005.3 |  |  | (1,924.1 | ) |  | 1,081.2 |  |  | 3,005.3 |  |  | (1,801.1 | ) |  | 1,204.2 |
In-process research and development | Up to 15 years upon commercialization |  | 330.1 |  |  | — |  |  | 330.1 |  |  | 110.9 |  |  | — |  |  | 110.9 |
Trademarks and tradenames | Indefinite |  | 64.0 |  |  | — |  |  | 64.0 |  |  | 64.0 |  |  | — |  |  | 64.0 |
In-licensed rights and patents | 6-16 years |  | 52.4 |  |  | (10.9 | ) |  | 41.5 |  |  | 47.2 |  |  | (4.8 | ) |  | 42.4 |
Assembled workforce | 4 years |  | 2.1 |  |  | (2.1 | ) |  | — |  |  | 2.1 |  |  | (2.1 | ) |  | — |
Total intangible assets |  |  | $ | 4,031.9 |  |  | $ | (2,350.7 | ) |  | $ | 1,681.2 |  |  | $ | 3,807.5 |  |  | $ | (2,199.3 | ) |  | $ | 1,608.2 |
For the three and nine months ended September 30, 2012, amortization of acquired intangible assets totaled $53.0 million and $151.3 million, respectively, as compared to $49.3 million and $157.7 million, respectively, in the prior year comparative periods. Amortization of acquired intangible assets is expected to be in the range of approximately $100.0 million to $200.0 million annually through 2017. Core Developed Technology Core developed technology primarily relates to our AVONEX product which was recorded in connection with the merger of Biogen, Inc. and IDEC Pharmaceuticals Corporation in 2003. Our most recent long range planning cycle was completed in the third quarter of 2012, which reflected a small decrease in the expected lifetime revenue of AVONEX resulting in an increase in amortization expense. In-process Research and Development (IPR&D) In-process research and development represents the fair value assigned to research and development assets that we acquire that have not been completed at the date of acquisition. In connection with our acquisition of Stromedix in March 2012, we acquired IPR&D programs with an estimated fair value of $219.2 million. For a more detailed description of this transaction, please read Note 2, Acquisitions to these condensed consolidated financial statements. In-licensed Rights and Patents We licensed rights for the diagnostic and therapeutic application of recombinant virus-like particles, known as VP1 proteins, to detect antibodies of the JC virus (JCV) in serum or blood. Under the terms of this license, we expect to make payments totaling approximately $57.0 million through 2016. These payments include upfront and milestone payments as well as the greater of an annual maintenance fee or usage-based royalty payment. As of September 30, 2012 and December 31, 2011, we have recognized an intangible asset totaling $24.5 million and $19.2 million, respectively, reflecting the total amount of upfront payments made and other time-based milestone payments. We will capitalize any additional payments due under this arrangement as an intangible asset when they become due. Amortization expense is recorded using an economic consumption model based on the number of JCV antibody assay tests performed each period compared to an estimate of the total tests we expect to perform multiplied by payments made to date and payments we expect to make through 2016. Goodwill The following table provides a roll forward of the changes in our goodwill balance:
(In millions) | As of September 30, 2012 |  | As of December 31, 2011
Goodwill, beginning of period | $ | 1,146.3 |  |  | $ | 1,146.3 |
Goodwill acquired during the period | 51.6 |  |  | — |
Other | 6.8 |  |  | — |
Goodwill, end of period | $ | 1,204.7 |  |  | $ | 1,146.3 |
During the three months ended September 30, 2012, we corrected goodwill by $6.8 million to establish a deferred tax liability that existed at the time of the merger of Biogen, Inc and IDEC Pharmaceuticals Corporation in 2003. As of September 30, 2012, we had no accumulated impairment losses related to goodwill.

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 42, 43, 44, 45, 46, 47 -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 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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