{
  "timeline": [
    {
      "date": "1991/8",
      "tags": [
        "会社設立"
      ],
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "日本電信電話㈱の出資によりエヌ・ティ・ティ・移動通信企画㈱設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/11",
      "tags": [
        "会社設立",
        "組織再編"
      ],
      "category": "会社設立|組織再編",
      "region": "",
      "importance": 2,
      "event": "各地域移動通信企画㈱（北海道、東北、東海、北陸、関西、中国、四国、九州）を設立（以下「地域企画会社8社」という。）",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/4",
      "tags": [],
      "category": "",
      "region": "",
      "importance": 1,
      "event": "エヌ・ティ・ティ移動通信網㈱へ商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/7",
      "tags": [
        "組織再編"
      ],
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "日本電信電話㈱より移動通信事業（携帯・自動車電話、無線呼出、船舶電話、航空機公衆電話）の営業譲受",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/4",
      "tags": [],
      "category": "",
      "region": "",
      "importance": 1,
      "event": "地域企画会社8社が各地域移動通信網㈱へ商号変更（以下「地域ドコモ8社」という。）",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/7",
      "tags": [
        "組織再編"
      ],
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "地域ドコモ8社へ各地域における移動通信事業（携帯・自動車電話、無線呼出）の営業譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1993/10",
      "tags": [
        "組織再編"
      ],
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "エヌ・ティ・ティ中央移動通信㈱と合併、同時に地域ドコモ8社が各地域移動通信㈱と合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/10",
      "tags": [
        "株式上場",
        "親子上場"
      ],
      "category": "株式上場|親子上場",
      "region": "",
      "importance": 3,
      "event": "東京証券取引所市場第一部上場",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/12",
      "tags": [
        "組織再編"
      ],
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "エヌ・ティ・ティ中央パーソナル通信網㈱よりPHS事業の営業譲受、同時に地域ドコモ8社が各地域パーソナル通信網㈱よりPHS事業の営業譲受",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/4",
      "tags": [],
      "category": "",
      "region": "",
      "importance": 1,
      "event": "㈱エヌ・ティ・ティ・ドコモへ商号変更、地域ドコモ8社も同様に商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/3",
      "tags": [
        "株式上場"
      ],
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "ロンドン証券取引所及びニューヨーク証券取引所上場",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/7",
      "tags": [
        "組織再編"
      ],
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "地域ドコモ8社と合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/10",
      "tags": [],
      "category": "",
      "region": "",
      "importance": 1,
      "event": "㈱ＮＴＴドコモへ商号変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/3",
      "tags": [
        "上場廃止"
      ],
      "category": "上場廃止",
      "region": "",
      "importance": 2,
      "event": "ロンドン証券取引所の上場廃止",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/4",
      "tags": [
        "上場廃止"
      ],
      "category": "上場廃止",
      "region": "",
      "importance": 2,
      "event": "ニューヨーク証券取引所の上場廃止",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    }
  ]
}