'Twilight' Star Nikki Reed -- I'm Done With 'Idol' Marriage ... But I'm Keeping the Dog

Nikki Reed will be living on her own -- now that her divorce from ex "American Idol" contestant Paul McDonald is finalized -- but she'll still have a guard dog by her side.

According to the final judgment in their split ... the biggest asset Paul's leaving the marriage with is the couple's Nashville home. Which is nice ... Music City for the music guy. Makes sense.

Nikki, on the other hand ... gets THREE other homes AND their "security dog" -- a German Shepherd named Enzo.

In the docs, Paul and Nikki agreed to waive off any spousal support.

One last thing ... cars. Nikki gets THREE of 'em -- a Range Rover, a Toyota Tundra, and a Toyota Rav4. The docs make no mention of a vehicle for Paul.

Good news for Uber.