Striking the right level of detail helps keep a mind map usable. Branches should contain enough information to be meaningful but not so much that they become dense blocks of text. Aim for short phrases, keywords, and visual markers rather than long sentences.
Guidelines for detail
Techniques to manage detail
Practical example
For a project milestone node, include the milestone name and a short due date. Expand into sub-branches for key tasks and responsibilities. Keep the map readable by stopping at the task level and linking to task lists for step-by-step execution.
Keeping detail manageable makes the map far more practical for planning and review. If something reads like a paragraph, consider relocating that information into a linked document or a child map.