We need to iron out the details.

The idiom “We need to iron out the details,” means that there are still some unresolved or unclear aspects of a plan, agreement, or situation that need to be discussed, clarified, or finalized. The phrase “iron out” comes from the idea of smoothing out wrinkles in fabric using an iron. The Idiom suggests that there might be some wrinkles or bumps in the plan that need to be smoothed over. It implies that there are still some uncertainties or disagreements that need to be resolved before everything is clear and agreed upon.
To “iron out the details,” people usually gather together to discuss and finalize the specific aspects of the plan. It involves careful consideration, negotiation, and decision-making to ensure that everyone is on the same page and all the necessary information is addressed. Once all the details have been ironed out, it means that everything has been clarified, agreed upon, and organized. It gives a sense of completion and readiness to move forward with the plan.
Similar idioms: I'm All Ears | Square Peg In A Round Hole | The Ball Is In Your Court | I’ll Take A Rain Check On That Meeting | Let's Not Reinvent The Wheel | We're Playing Catch-Up