Associations are statements that describe permissible interrelationships between the terms. A type/subtype relation is a type of association. Other terms used to describe this sort of association is 'wider-narrower' or 'general-special'.
Retrieve information by class (these are currently prototypes). (List of all Types/Subtypes) | (Machine Readable (example))
Balance sheet= Cash flow statement= Income statement= Comprehensive income= Other=
The following is a prototype of wider-narrower relations using XBRL general-special definition arcrole: