"detailed planning" is a correct and usable phrase in written English. It can be used to refer to careful and considered planning and preparation for an event, or a product, process or system. For example, "We need to put in place some detailed planning before we can launch the new website.".
Extensive mapping of the mountains, particularly by the Chinese, has permitted detailed planning for road construction and industrial siting.
After the notice was reactivated, detailed planning recommenced (essentially from scratch).
British Lieutenant-General Frederick E. Morgan was appointed Chief of Staff, Supreme Allied Commander (COSSAC), to begin detailed planning.
Detailed planning beforehand and use of feedback mechanisms allow for adjustment during the program.
Detailed planning for the project began in 1955.
6. Putting in place detailed planning and programmes on the course of the battle.
Detailed planning applications will now be put forward by developers.
Thanks to Ludwig my first paper got accepted! The editor wrote me that my manuscript was well-written
Listya Utami K.
PhD Student in Biology, Bandung Institute of Technology, Indonesia