I had blurry vision and floaters. is that detachement?

Detachment: Not necessarily. These symptoms can occur with a retinal detachment and if the detachment is untreated there is loss of vision that ensues.

Floaters: It sounds as if you have had a posterior vitreous detachment. This is a situation where the vitreous(jelly) of the eye detaches (not a retinal detachment), it then "crumples" up leaving dots, spots, strands of blurry vitreous; i.e. The "floater". You should have an exam to ensure the incident did not tear the retina, which could lead to a retinal detachment. Wait one year then consider surgery.