Isn't that a tax rate of 2.4% on foreign income? Or does "effective tax rate" mean taxes across all income? If they've only saved "$3.1 billion since 2007" (to

Isn't that a tax rate of 2.4% on foreign income? Or does "effective tax rate" mean taxes across all income? If they've only saved "$3.1 billion since 2007" (to October 2010), it seems like they haven't saved that much (er, relatively...).