Summary:
Paycode hours details report shows data for the time entered for each pay-code.  
The report provides data for different pay-codes and does not provide a break-up of data for different time-off types.
There could be scenarios where we want to get the total time entered for each time-off type in the paycode hours detail report.

Work Around:

As the report provides data for pay-codes it is a good idea to create individual pay-codes for each TimeOff type with the name of the time-off type.
Create pay-codes like vacation, Bereavement, Holiday etc,. The report would then show a break-up of time entered against these pay-codes.