LEO Background checks

Applying for LEO jobs around northern Washington; Marysville, Everett, etc. Already completed and passed the PAT and the new test. My only concern is that they will dig through my credit card statements looking at individual purchases and my VA medical history (doctors notes, etc.). In other words, how in detail do these things get? I didn't do any of the disqualifiers, and have no criminal history whatsoever. I just want to know how much of my business I'm turning out.