Have you set up logging in your package? That's step 1. Just set it up for a text file and choose the logging options you want.
Then, add a control flow task that executes conditionally on failure. If you really want MS-Word format, you'll need to also write a script component to talk to MS Word to write the file. Note that you can do Excel as a SSIS destination directly but not Word. The task can then email the results, using the file you specified in the logging options.