In Australia, they're made of plastic, so they look just like they did before they went in, only cleaner...

American money is made of mostly cotton and linen, so it will wash like any other fabric.

In Canada, our cash is plastic. You have another chance if you wash it. It's dead if you put it in the dryer though.

Bills are made to be able to go through the wash for the exact reason that yours ended up in the wash, people carry them around in their pockets and it’s easy to miss or forget about. The bill might look slightly more worn but it won’t have all the color washed out or anything like that, assuming you didn’t dump it in a load of whites with a ton of bleach. It shouldn’t hurt your clothes either.

From a single wash? Practically unchanged. At worst it will be slightly faded.

Sounds like you're engaging in money laundering

Not much different. But then again idk about us dollars

it'll be fine. might be wadded if it's old. won't bleed color on your clothes

Eh. If it's an old US bill it might come out a bit more ragged and fragile, but it won't destroy the money or your laundry.

Do it enough and the money would disintegrate, but a single wash won't be a problem, just plan on being gentle when you extract it just in case.

The laundry will be light pink, the green color of the US bank note is actually an optical illusion deliberately put there as a counterfitting meassure, they use red dye but only the reverse side of the dye to make it appear green, it is similar to red/green color blindness.

Then when you launder the money, the dye gets jumbled and returns to it's red color, this is mostly noticable on the normal laundry since dollar bills.