Sometimes it can be bad if your poop floats and sometimes poop floating may just be a result of something you ate and in that case it's not bad.
Healthy poop should sink to the bottom of the toilet.
Poop that floats can be unhealthy or it can sometimes be a result of certain foods you eat.
If your poop floats, there's a slight chance you have steatorrhea, which means you have too much fat in your poop.
Steatorrhea indicates you can't absorb fat properly, and it can be a symptom of the following conditions: Celiac disease.
Floating poop is most often the result of something you ate.
For example if you eat a large meal or something that produces gas, the gas mixes with stool in the intestines.
The extra air from the gas makes poop less dense, or packed. This leads it to float when it hits the toilet bowl.
When you're healthy your poop should sink to the bottom of the toilet.
A sinking poop is an indication that the poop and yourself are healthy.
If your poop is floating it's an indication of a problem with your stools such as high fat content which indicates a condition known as malabsorption.
This condition prevents your body from absorbing enough of the nutrients an fat from the food that your ingesting.