At the beginning of 2022, Metatec Incorporated acquired Ellison Technology Corporation for $670 million. In addition to cash, receivables, and inventory, the following assets and their fair values were also acquired: Plant and equipment (depreciable assets) Patent Goodwill $ 157 million 47 million 110 million The plant and equipment are depreciated over a 10-year useful life on a straight-line basis. There is no estimated residual value. The patent is estimated to have a five-year useful life, no residual value, and is amortized using the straight-line method. At the end of 2024, a change in business climate indicated to management that the assets of Ellison might be impaired. The following amounts have been determined: Plant and equipment: Undiscounted sum of future cash flows Fair value Patent: Undiscounted sum of future cash flows Fair value) Goodwill: Fair value of Ellison Technology Corporation Book value of Ellison's net assets (excluding goodwill) Book value of Ellison's net assets (including goodwill) $ 87 million 67 million $ 21 million 14 million. $ 527 million 460 million 540 million