KK w/ an A, double donked

[TheGrinch]

:grunch:

In a small pot I'd ditch it. However, this is a big pot. It's hard to gain information by raising into a passive player so I would just call; if it gets raised behind you'll want to fold. If it's called behind I'd fold if SB bets and bet if checked.
The way you played it I think the turn fold is fine.