A Danish, Norwegian, Swedish ("biljon" ) billion is 10^12, a US billion is 10^9. It's utterly confusing sometimes, and this is one of the fewer cases where US metric makes much more sense.
US: million, billion, trillion. 10^6, 10^9, 10^12
Skandinavia: million, milliard, billion, billiard, trillion, trilliard 10^6, 10^9, 10^12, etc
PS: I don't know about the rest of the world.