"your guess is as good as mine" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "your guess is as good as mine",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Arabic terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "I don't know; I have no idea."
      ],
      "id": "en-your_guess_is_as_good_as_mine-en-phrase-IWaPyS4h",
      "links": [
        [
          "I don't know",
          "I don't know"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) I don't know; I have no idea."
      ],
      "related": [
        {
          "word": "anyone's guess"
        },
        {
          "word": "search me"
        }
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "ar",
          "lang": "Arabic",
          "roman": "mā l-masʔūlu biʔaʕlama mina s-sāʔili",
          "sense": "Translations",
          "word": "مَا الْمَسْؤُولُ بِأَعْلَمَ مِنَ السَّائِلِ"
        },
        {
          "code": "be",
          "lang": "Belarusian",
          "roman": "babka nadvaje skazala",
          "sense": "Translations",
          "word": "бабка надвае сказала"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "Translations",
          "word": "ne so quanto te"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "word": "na dwoje babka wróżyła"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "babka nadvoje skazala",
          "sense": "Translations",
          "word": "бабка надвое сказала"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-your guess is as good as mine.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/69/En-au-your_guess_is_as_good_as_mine.ogg/En-au-your_guess_is_as_good_as_mine.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/69/En-au-your_guess_is_as_good_as_mine.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "your guess is as good as mine"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "your guess is as good as mine",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "related": [
    {
      "word": "anyone's guess"
    },
    {
      "word": "search me"
    }
  ],
  "senses": [
    {
      "categories": [
        "Arabic terms with redundant transliterations",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with audio links",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "I don't know; I have no idea."
      ],
      "links": [
        [
          "I don't know",
          "I don't know"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) I don't know; I have no idea."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-your guess is as good as mine.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/69/En-au-your_guess_is_as_good_as_mine.ogg/En-au-your_guess_is_as_good_as_mine.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/69/En-au-your_guess_is_as_good_as_mine.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "ar",
      "lang": "Arabic",
      "roman": "mā l-masʔūlu biʔaʕlama mina s-sāʔili",
      "sense": "Translations",
      "word": "مَا الْمَسْؤُولُ بِأَعْلَمَ مِنَ السَّائِلِ"
    },
    {
      "code": "be",
      "lang": "Belarusian",
      "roman": "babka nadvaje skazala",
      "sense": "Translations",
      "word": "бабка надвае сказала"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "Translations",
      "word": "ne so quanto te"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "word": "na dwoje babka wróżyła"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "babka nadvoje skazala",
      "sense": "Translations",
      "word": "бабка надвое сказала"
    }
  ],
  "word": "your guess is as good as mine"
}