I'm not sure if 'raked in' would be the right phrase to describe Android revenue and profits. I'm sure Google was a bit embarassed by that number leaking out, as that figure was ALL-TIME for Android, which is still less than LAST-QUARTERS results for Apple's iPhone sales.
The $1B though, is a good deal for both parties. Google gets all that high-end search traffic for only $1B, and Apple uses, by far, the best search engine technology. Win-win.