{
  "spec_version": "3",
  "endpoint": "segments",
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  "company_name": "東京地下鉄",
  "content_lang": "ja",
  "meta_lang": "en",
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  "updated": "2026-08-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/9023/financials/",
  "source": {
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    "extraction": "EDINET の XBRL から機械抽出",
    "caveat": "セグメント区分は各期の開示区分をそのまま採録しており、期をまたいだ区分の連続性は保証しない"
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