Idle Fleets filter

This shows only your fleets that have no movement orders, and any active enemy ships (so you can match one with the other, if you wish). If your fleet is orbiting a planet, only those planets with idle fleets will show orbit rings. If the fleet is in space, it appears as a blue triangle.

Fleets that have run out of fuel are still considered active, and won't appear if you're using only this overlay.

Idle Fleets filter notes
Idle enemy fleets are filtered out of the scanner when you select the Idle Fleets filter.
Claim Adjuster fleets doing remote terraforming are not considered idle.