Best case, remove 12'' of drywall at the bottom of every wall that got wet. remove insulation, spray with the bleach solution, and dry it out for a couple of weeks.
Worst case, When there is an overhead flood is is much better to remove all drywall and insulation and start over. All the dampness is not just a mold problem. Termites love the dampness and a friend of ours had to treat for the bugs after his flood. I hope you have a raised floor (not slab on grade). You may want to treat the under floor as well.
I'm in the Drywall business, and i have seen this to many times.
Good luck, Dale