Checking laravel data

Hello,

I want to pass value to the tables -

PromoController.php

public function pdetail_listPromo(Request $request){
        $promo_code = $request->promo_code;       

        $promo = PromoDetailModel::where('promo_code', $promo_code);

        dd($promo);
        die();

        return view('pages.promo.pdetail_list')->with('list', $promo);        
    }

This is the result:

Builder {#219 ▼
#query: Builder {#218 ▼
        +connection: MySqlConnection {#214 ▶}
        +grammar: MySqlGrammar {#215 ▼
    #operators: array:1 [▶]
     #selectComponents: array:11 [▼
        0 => "aggregate"
        1 => "columns"
        2 => "from"
        3 => "joins"
        4 => "wheres"
        5 => "groups"
        6 => "havings"
        7 => "orders"
        8 => "limit"
        9 => "offset"
        10 => "lock"
        ]
     #tablePrefix: ""
    }
 +processor: MySqlProcessor {#216}
    +bindings: array:7 [▶]
    +aggregate: null
    +columns: null
    +distinct: false
    +from: "tb_m_promo_detail"
    +joins: null
    +wheres: array:1 [▼
    0 => array:5 [▼
        "type" => "Basic"
        "column" => "promo_code"
        "operator" => "="
         "value" => "LISTRIKCERIA"
        "boolean" => "and"
        ]
    ]
    +groups: null
    +havings: null
    +orders: null
    +limit: null
    +offset: null
    +unions: null
    +unionLimit: null
    +unionOffset: null
    +unionOrders: null
    +lock: null
    +operators: array:29 [▶]
    +useWritePdo: false
}
#model: PromoDetailModel {#213 ▼
    #table: "tb_m_promo_detail"
    #connection: null
    #primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: false
+wasRecentlyCreated: false
#attributes: []
#original: []
#changes: []
#casts: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: true
#hidden: []
#visible: []
#fillable: []
#guarded: array:1 [▶]
  }
 #eagerLoad: []
 #localMacros: []
 #onDelete: null
 #passthru: array:12 [▼
    0 => "insert"
    1 => "insertGetId"
    2 => "getBindings"
    3 => "toSql"
    4 => "exists"
    5 => "doesntExist"
    6 => "count"
    7 => "min"
    8 => "max"
    9 => "avg"
   10 => "sum"
   11 => "getConnection"
   ]
   #scopes: []
   #removedScopes: []
   }

I wonder why the data does not appears in array since after checking the tables -

TAGIHANCERIA 10 001 10 NULL 30000 active 2018-09-06 06:52:22 1 Ubah Ubah Salin Salin Hapus Hapus TAGIHANCERIA 10 002 10 NULL 30000 active 2018-09-06 06:52:22 1 Ubah Ubah Salin Salin Hapus Hapus TAGIHANCERIA 10 003 10 NULL 30000 active 2018-09-06 06:52:22 1