It's one thing about packing light, but especially for long trips, what sort of back ups of your documents do you take with you?

For long trips, I take at least a photocopy of my passport and sometimes a copy of my drivers licence and ticket/itinerary in a waterproof bag, just for safety.

Do you take your insurance T&C? What about your loyalty programme T&C (if someone refuses you lounge access, for instance)....?

For short domestic trips, I don't take any back ups...