How can I add my document Reference Id to IdCrucero

I have been trying to add new items to my "Cruceros" collection and I want to have the firestore document uid as the id of the item, but it is always empty and I dont know why this is happening and when the console.log shows "this.idCrucero" it shows what I want but it isnt in the firebase collection, this is my code:

import { inject, Injectable } from "@angular/core";
import { addDoc, collection, doc, Firestore, getDoc, getDocs, orderBy, query, setDoc } from "@angular/fire/firestore";

@Injectable({
providedIn: 'root',
})
export class CrucerosService {
private firestore = inject(Firestore);
public idCrucero: string = "";

async guardarCrucero(
idCrucero: any,
name: any,
subtitle: any,
imagenCrucero: any,
descripcion: any,
imagenDescripcion: any,
tituloQueHacer: any[],
imagenQueHacer: any[],
descripcionQueHacer: any[],
tituloCamarotes: any[],
descripcionCamarotes: any[],
imagenCamarotes: any[],
planos: any[],
lugares: any[],
precioLugares: any[],
puertos: any[]
) {
const obj ={
"idCrucero" : idCrucero,
"name" : name,
"subtitle" : subtitle,
"imagenCrucero" : imagenCrucero,
"descripcion" : descripcion,
"imagenDescripcion" : imagenDescripcion,
"tituloQueHacer" : tituloQueHacer,
"imagenQueHacer" : imagenQueHacer,
"descripcionQueHacer" : descripcionQueHacer,
"tituloCamarotes" : tituloCamarotes,
"descripcionCamarotes" : descripcionCamarotes,
"imagenCamarotes" : imagenCamarotes,
"planos" : planos,
"lugares": lugares,
"precioLugares": precioLugares,
"puertos": puertos
};

const Ref = collection(this.firestore, 'Cruceros');
const docRef = await addDoc(Ref, obj);
this.idCrucero = docRef.id;
console.log(this.idCrucero)
}

async obtenerCruceros(){
const Ref = collection(this.firestore, 'Cruceros');
const q = query(Ref, orderBy('name'));
const querySnapshot = await getDocs(q);
const cruceros = querySnapshot.docs.map(doc => ({ id:doc.id, ...doc.data()}));
return cruceros
}

async actualizarCrucero(id: string, formData: any) {
const cruceroRef = doc(this.firestore, 'Cruceros', id.toString());
await setDoc(cruceroRef, formData, { merge: true });
}

async obtenerCruceroPorId(id: string) {
const Ref = doc(this.firestore, 'Cruceros', id);
const docSnap = await getDoc(Ref);
if (docSnap.exists()) {
return docSnap.data();
} else {
console.log("No such document!");
return null;
}
}
}

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