Is Google docs Uploader safe from viruses or keyloggers?

Hello techyv.com!
I have here an important document that I need to send to my wife.
Now I can't seem to directly hand it over to her because she was in Japan.
Now I was thinking if I could possibly trust the Google docs uploader?
I'm afraid that the documents would become corrupted or of some sort.
Please let me know if it is safe.
Thanks.
