Breaking down the deal negotiations of Facebook’s Instagram acquisition reveals that the social network expects it will be worth greater than $100 billion in its IPO. The Instagram deal valued Facebook at roughly $75 billion even though its latest trades on secondary markets were around $100 billion. Even though the deal valued them at that level, Facebook, sweetened the deal by financing part of its Instagram acquisition with stock, telling Kevin Systrom and the IPO could go up to $104 billion, reports Dealbook’s Evelyn M. Rusli, who (like many I assume) has planned her vacation around the Facebook IPO. [Source: Dealbook]