Outline Same Text

My boss wants a highly formatted report, and I'm trying to do it in a pivot table. But one area is giving me trouble, so I'm asking for help. In the table attached, in the "Acct Descr" column, I'd like to outline unique items (see the "How I'd like it" tab if my description falls short). I wasn't sure if there was a Pivot function that would do it, or if I needed to achieve it through Conditional Formatting. I started going down that road by couldn't figure out the formula to use. Any help would be highly appreciated.

Underlying Data added.

Rorya,
I'm not following your direction. If I check Row Headers on the Design tab it Bolds my columns A and B, making more issues.

Um, Pete, my issue has nothing to do with the Expand/Collapse buttons. did you look at the "How I want it" tab? That's what I'm trying to achieve, without doing it manually. I CAN do it through Conditional Formatting, but I'd like to see if there's a way to do using just the Pivot options.

Then that's the way I'll do it. Thanks for clarifying there's no "better" way to do it. I've attached my example with the conditional formatting applied for anyone who'd like to see it.