Hello Ryan,
This isn't a bug in the documentation; those columns are genuinely
not supported for ad or ad group reports. This applies to reports
scheduled via the AdWords API or reports scheduled via the AdWords web
interface.
There's a Help Center topic on Invalid Click Reports indicating that
they're only supported at the campaign and account level:
https://adwords.google.com/support/bin/answer.py?answer=44008
Cheers,
-Jeff Posnick, AdWords API Team