Lets see:
There was $1.2 billion paid back from loans: US ($1B), Canadian ($100M), and Ontario ($100M) governments
$1.6B was due to "foreign currency re-measurement loss." I think that means they lost money due to the US dollar going down.
Finally, $2.6B went to a UAW retiree medical plan.
Add all that up and it comes to $5.4B
Yup epic failure of GM