The Abbot Labs Abbvie split which was really a simple operation, in that the Pharma company was split from the other medical businesses, took 15 months. Rumors about them considering a split were around a lot longer than that. Irani was only given the boot last May and then there were only rumblings that some form of restructuring would occur. Conoco Philips split in 2102, 10 months after the announcement; however, both companies continued to sell properties and restructure even to the current day. We will be lucky if the California split goes by the end of the year. One of the complicated things is to split the debt. Because corporate bonds have all kinds of covenants in them you cannot just divide them.