I always make a point to make photocopies of important travel documents such as my passport and the front side of the credit cards I will be using internationally. I also make sure to have a list of important phone numbers saved in my carry-on bag and hidden in my roller. As an extra precaution, I have also scan these documents into PDF and are saved in my Gmail. You will never know if you lose an important travel document overseas and need to get them reissued. But having these should make the process easier.