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Product Sales | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Product Sales | Product Sales Net product sales consist of the following:
|  |  | Three Months Ended March 31,
(In millions) |  |  | 2025 |  | 2024
EYLEA HD® | U.S. |  | $ | 306.8 |  |  | $ | 200.0 |
EYLEA® | U.S. |  | 736.0 |  |  | 1,201.6 |
Total EYLEA HD and EYLEA | U.S. |  | 1,042.8 |  |  | 1,401.6 |
Libtayo® | U.S. |  | 192.5 |  |  | 159.2 |
Libtayo | Rest of world |  | 92.6 |  |  | 104.7 |
Total Libtayo | Global |  | 285.1 |  |  | 263.9 |
Praluent® | U.S. |  | 56.8 |  |  | 70.0 |
Evkeeza® | U.S. |  | 30.9 |  |  | 24.8 |
Inmazeb® | Rest of world |  | — |  |  | 1.0 |
|  |  | $ | 1,415.6 |  |  | $ | 1,761.3 |
As of March 31, 2025 and December 31, 2024, the Company had $3.760 billion and $4.278 billion, respectively, of trade accounts receivable that were recorded within Accounts receivable, net. The Company had product sales to certain customers that each accounted for more than 10% of total gross product revenue for the three months ended March 31, 2025 and 2024. Sales to each of these customers as a percentage of the Company's total gross product revenue are as follows:
|  | Three Months Ended March 31,
|  | 2025 |  | 2024
Customer A |  | 51 | % |  | 51 | %
Customer B |  | 25 | % |  | 24 | %

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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