as a single-step acquisition. In the Arch Company and Zion Company example, once control is evident, the only relevant values in consolidating the accounts of Zion are fair values at January 1, 2015. A new basis of accountability arises for Zion Company on that single date because obtaining control of another firm is considered a signifi- cant remeasurement event. Previously owned noncontrolling blocks of stock are conse- quently revalued to fair value on the date control is obtained