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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets | Intangible assets consist of the following:
|  |  |  | As of December 31,
|  |  |  | 2022 |  | 2021
(In millions) |  | Estimated Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Acquired product rights - Libtayo |  | 13 years |  | $ | 946.3 |  |  | $ | (35.7) |  |  | $ | 910.6 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Other intangibles |  | 5–8 years |  | 10.0 |  |  | (5.1) |  |  | 4.9 |  |  | 29.3 |  |  | (22.6) |  |  | 6.7 |
Intangible assets, net |  |  |  | $ | 956.3 |  |  | $ | (40.8) |  |  | $ | 915.5 |  |  | $ | 29.3 |  |  | $ | (22.6) |  |  | $ | 6.7 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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