How to Get More Details of A record Using Table Relations in Yii2

Question

I have a DepartmentsWokplans Model that belongs to only one CoprprateWorkPlan. The CorporateWorkPlan Model has many CorporateStrategicObjectives. Using a DepartmentWorkplanId, I'm able to the CoprporateStatergicObjectives using the code I have shared Below but only the Ids. My problem is how do I get more details about the CoprporateStatergicObjectives (Eg Description, ETC) which are stored in another table using the Id's that I have?

DepartmentWorkPlansModel = DepartmentWorkPlans::findOne($DepartmentWorkPlanId); 

$CorporateObjectives = $DepartmentWorkPlansModel->corporateWorkPlan->corporateStrategicObjectives;

//How Do I get more Details about the CorporateObjectives?

Results I'm getting when I Print_r($CorporateObjectives)

Array
(
    [0] => common\models\CorporateStrategicObjectives Object
        (
            [_attributes:yii\db\BaseActiveRecord:private] => Array
                (
                    [CorporateObjectiveId] => 1
                    [CorporateWorkPlanId] => 5
                    [StrategicObjectiveId] => 5
                )

            [_oldAttributes:yii\db\BaseActiveRecord:private] => Array
                (
                    [CorporateObjectiveId] => 1
                    [CorporateWorkPlanId] => 5
                    [StrategicObjectiveId] => 5
                )

            [_related:yii\db\BaseActiveRecord:private] => Array
                (
                )

            [_relationsDependencies:yii\db\BaseActiveRecord:private] => Array
                (
                )

            [_errors:yii\base\Model:private] => 
            [_validators:yii\base\Model:private] => 
            [_scenario:yii\base\Model:private] => default
            [_events:yii\base\Component:private] => Array
                (
                )

            [_eventWildcards:yii\base\Component:private] => Array
                (
                )

            [_behaviors:yii\base\Component:private] => Array
                (
                )

        )