[
  {
    "doc_id": "sec-edgar-8-k-2026-07-30-regn-20260730-htm",
    "title": "8-K – 2026-07-30 – regn-20260730.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000023/regn-20260730.htm",
    "date": "2026-07-30",
    "period": "2026-07-30",
    "form_type": "8-K",
    "report_key": null,
    "filename": "regn-20260730.htm",
    "text_chars": 3518,
    "sha256": "cd5b2b94e04435771fa17bee7060956552d84d6b530588c7064bfda8336b99fc",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-30-regn-20260730-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-30-regn-20260730-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-30-regn-20260730-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-30-regn-20260730-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-30-regn-20260730-htm/part-001.html",
        "chars": 3518
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2026-07-30-regn-20260630-htm",
    "title": "10-Q – 2026-07-30 – regn-20260630.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000025/regn-20260630.htm",
    "date": "2026-07-30",
    "period": "2026-06-30",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "regn-20260630.htm",
    "text_chars": 367751,
    "sha256": "61011e9ac4f1024dc72824475cc2e299217d8cf9caffad9aad3c3405c8a08fa7",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm/part-001.html",
        "chars": 176645
      },
      {
        "number": 2,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm/part-002.html",
        "chars": 176891
      },
      {
        "number": 3,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-07-30-regn-20260630-htm/part-003.html",
        "chars": 14211
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm",
    "title": "8-K – 2026-07-06 – tm2619682d1_8k.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000110465926080562/tm2619682d1_8k.htm",
    "date": "2026-07-06",
    "period": "2026-07-06",
    "form_type": "8-K",
    "report_key": null,
    "filename": "tm2619682d1_8k.htm",
    "text_chars": 7373,
    "sha256": "bf8389447f8057ccefa487b939f6db9f675e73e37317395f5f643b41b315b22c",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-07-06-tm2619682d1-8k-htm/part-001.html",
        "chars": 7373
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm",
    "title": "8-K – 2026-06-17 – tm2618117d1_8k.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000110465926075127/tm2618117d1_8k.htm",
    "date": "2026-06-17",
    "period": "2026-06-12",
    "form_type": "8-K",
    "report_key": null,
    "filename": "tm2618117d1_8k.htm",
    "text_chars": 4430,
    "sha256": "f91efe45cbf4b9b40588aa4163cc8d9ccf968fb78a8b3988a0a3ac2339b96113",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-06-17-tm2618117d1-8k-htm/part-001.html",
        "chars": 4430
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-04-29-regn-20260429-htm",
    "title": "8-K – 2026-04-29 – regn-20260429.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000014/regn-20260429.htm",
    "date": "2026-04-29",
    "period": "2026-04-29",
    "form_type": "8-K",
    "report_key": null,
    "filename": "regn-20260429.htm",
    "text_chars": 3522,
    "sha256": "8d7f6d63397d308cbdd307fe02d0582e420925e0543b5ae5f51e798f88064a81",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-29-regn-20260429-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-29-regn-20260429-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-29-regn-20260429-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-29-regn-20260429-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-29-regn-20260429-htm/part-001.html",
        "chars": 3522
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2026-04-29-regn-20260331-htm",
    "title": "10-Q – 2026-04-29 – regn-20260331.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000016/regn-20260331.htm",
    "date": "2026-04-29",
    "period": "2026-03-31",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "regn-20260331.htm",
    "text_chars": 349094,
    "sha256": "2b1f47055697a9ff4db2c3e358bbe82258b08d13582e857119225d0b5f165223",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm/part-001.html",
        "chars": 178119
      },
      {
        "number": 2,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2026-04-29-regn-20260331-htm/part-002.html",
        "chars": 170973
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm",
    "title": "8-K – 2026-04-08 – tm2611354d1_8k.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000110465926040661/tm2611354d1_8k.htm",
    "date": "2026-04-08",
    "period": "2026-04-08",
    "form_type": "8-K",
    "report_key": null,
    "filename": "tm2611354d1_8k.htm",
    "text_chars": 7449,
    "sha256": "2276dd036637f7b0bc7413fbdf3f6de14593e64fc21038922397e144564fbaa9",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-04-08-tm2611354d1-8k-htm/part-001.html",
        "chars": 7449
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-k-2026-02-04-regn-20251231-htm",
    "title": "10-K – 2026-02-04 – regn-20251231.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000008/regn-20251231.htm",
    "date": "2026-02-04",
    "period": "2025-12-31",
    "form_type": "10-K",
    "report_key": null,
    "filename": "regn-20251231.htm",
    "text_chars": 614146,
    "sha256": "02f3ea432125cd122dbadd9598971d99d45d6903fd6a7ad0971208bc592048a5",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/part-001.html",
        "chars": 175612
      },
      {
        "number": 2,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/part-002.html",
        "chars": 174608
      },
      {
        "number": 3,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/part-003.html",
        "chars": 179679
      },
      {
        "number": 4,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-k-2026-02-04-regn-20251231-htm/part-004.html",
        "chars": 84241
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-01-30-regn-20260130-htm",
    "title": "8-K – 2026-01-30 – regn-20260130.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258926000004/regn-20260130.htm",
    "date": "2026-01-30",
    "period": "2026-01-30",
    "form_type": "8-K",
    "report_key": null,
    "filename": "regn-20260130.htm",
    "text_chars": 3557,
    "sha256": "f141107cd3630615d1c927858e17ef2263290ad2a9e5392617a9213d2a7df818",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-30-regn-20260130-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-30-regn-20260130-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-30-regn-20260130-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-30-regn-20260130-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-30-regn-20260130-htm/part-001.html",
        "chars": 3557
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm",
    "title": "8-K – 2026-01-12 – tm262861d1_8k.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000110465926002691/tm262861d1_8k.htm",
    "date": "2026-01-12",
    "period": "2026-01-12",
    "form_type": "8-K",
    "report_key": null,
    "filename": "tm262861d1_8k.htm",
    "text_chars": 10209,
    "sha256": "6d3b10148feb1a1a0892538d0db948e4f1fe955a0a1890fd528aecb23c76b340",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2026-01-12-tm262861d1-8k-htm/part-001.html",
        "chars": 10209
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2025-10-28-regn-20251028-htm",
    "title": "8-K – 2025-10-28 – regn-20251028.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258925000026/regn-20251028.htm",
    "date": "2025-10-28",
    "period": "2025-10-28",
    "form_type": "8-K",
    "report_key": null,
    "filename": "regn-20251028.htm",
    "text_chars": 3556,
    "sha256": "5aaf8bb42b9e5e50d821a03d16ec279f6e70636fb4ac6f4b7dcb040959ac36e0",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-28-regn-20251028-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-28-regn-20251028-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-28-regn-20251028-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-28-regn-20251028-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-28-regn-20251028-htm/part-001.html",
        "chars": 3556
      }
    ]
  },
  {
    "doc_id": "sec-edgar-10-q-2025-10-28-regn-20250930-htm",
    "title": "10-Q – 2025-10-28 – regn-20250930.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000087258925000028/regn-20250930.htm",
    "date": "2025-10-28",
    "period": "2025-09-30",
    "form_type": "10-Q",
    "report_key": null,
    "filename": "regn-20250930.htm",
    "text_chars": 390863,
    "sha256": "58473cc1505e2aa60981592da03b0a99a828d618f0678685ae6f5f1e6e254fd1",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm/part-001.html",
        "chars": 175838
      },
      {
        "number": 2,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm/part-002.html",
        "chars": 174457
      },
      {
        "number": 3,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-10-q-2025-10-28-regn-20250930-htm/part-003.html",
        "chars": 40564
      }
    ]
  },
  {
    "doc_id": "sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm",
    "title": "8-K – 2025-10-06 – tm2528010d1_8k.htm",
    "source": "SEC EDGAR",
    "source_class": "sec",
    "source_url": "https://www.sec.gov/Archives/edgar/data/872589/000110465925096921/tm2528010d1_8k.htm",
    "date": "2025-10-06",
    "period": "2025-10-06",
    "form_type": "8-K",
    "report_key": null,
    "filename": "tm2528010d1_8k.htm",
    "text_chars": 7465,
    "sha256": "8823f730ce99a51acd0f72e4aac9572d8d51d0cb8ad772c52fca77a4f97da35d",
    "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm",
    "absolute_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm",
    "txt_url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm/fulltext.txt",
    "absolute_txt_url": "https://spela.port0.org/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm/fulltext.txt",
    "parts": [
      {
        "number": 1,
        "url": "/company/regeneron-pharmaceuticals-inc/documents/sec-edgar-8-k-2025-10-06-tm2528010d1-8k-htm/part-001.html",
        "chars": 7465
      }
    ]
  }
]