How to pass an element ID to a component?

Question

1C-Bitrix

As part of the training, I am writing my own component, its purpose is to display a list of other elements on the page of the detailed view of the element, for which the element being viewed is the value of the property.
Those. I view the detailed page of the country N, it is necessary to display a list of tours, in which the name of the country N is indicated in the "Country" property (binding by element).
The option to get the ID from the URL via GET is not suitable.