Back in January, Judge Barbier lazily picked a halfway number between the government's and BP's estimates of the total amount of oil spilled during the Macondo blowout. The ruling represented something like a $4 billion to $8 billion win for BP. Nevertheless, BP appealed the ruling. Because from BP, point of view, they are pretty much done paying anything.
And now the government has appealed also .
Eventually, they'll have to pay some nominal fee. In another 20 years or so.