Table of Contents review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test. Arconic determines annually, based on facts and circumstances, which of its reporting units will be subject to the qualitative assessment. For those reporting units where a qualitative assessment is either not performed or for which the conclusion is that an impairment is more likely than not, a quantitative impairment test will be performed. Arconic’s policy is that a quantitative impairment test be performed for each reporting unit at least once during every three-year period. Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Additionally, an assessment of the level of impact that a particular factor would have on the estimated fair value is determined using high, medium, and low weighting. Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital (WACC) between the current and prior years for each reporting unit. During the 2019 annual review of goodwill, management proceeded directly to the quantitative impairment test for all seven of its reporting units. The estimated fair values for each of the seven reporting units exceeded their respective carrying values by more than 50%, thus, there was no goodwill impairment. Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. Arconic uses a discounted cash flow (DCF) model to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including sales growth (volumes and pricing), production costs, capital spending, and discount rate. Most of these assumptions vary significantly among the reporting units. Cash flow forecasts are generally based on approved business unit operating plans for the early years and historical relationships in later years. The WACC rate for the individual reporting units is estimated with the assistance of valuation experts. Arconic would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit. In the first quarter of 2019, management transferred its aluminum extrusions business (Aluminum Extrusions) from Engineered Structures within the EP&F segment to the GRP segment, based on synergies with the GRP segment including similar customer base, technologies, and manufacturing capabilities. Management assessed and concluded that the remaining Engineered Structures business unit and the Aluminum Extrusions business unit represent reporting units. As a result of the reorganization, goodwill of $110 was reallocated from Engineered Structures to Aluminum Extrusions and these reporting units were evaluated for impairment during the first quarter of 2019. The estimated fair value of each of these reporting units substantially exceeded their carrying value; thus, there was no goodwill impairment. In the second quarter of 2019, management transferred its castings operations from Engineered Structures to Engine Products within the EP&F segment based on process expertise for investment castings that existed within Engine Products. As a result, goodwill of $105 was reallocated from Engineered Structures to Engine Products and these reporting units were evaluated for impairment during the second quarter of 2019. The estimated fair value of each of these reporting units substantially exceeded their carrying value; thus, there was no impairment. As a result of the elimination of the TCS segment in the third quarter of 2019 (see Segment Information above), the Company transferred $7 of Forged Wheels goodwill and $68 of BCS goodwill from the TCS segment to the EP&F and GRP segments, respectively. Both Forged Wheels and BCS are considered reporting units. In the second quarter of 2019, as a result of the decline in the forecasted financial performance and related impairment of long-lived assets of the Disks asset group within Engine Products, the Company also performed an interim impairment evaluation of goodwill for Engine Products. The estimated fair value of the reporting unit was substantially in excess of its carrying value; thus, there was no impairment of goodwill. In connection with the interim impairment evaluation of long-lived assets for the Disks asset group within Engine Products in the second quarter of 2018, which resulted from a decline in forecasted financial performance for the business in connection with its updated three-year strategic plan, the Company also performed an interim impairment evaluation of goodwill for Engine Products. The estimated fair value of the reporting unit was substantially in excess of the carrying value; thus, there was no impairment of goodwill. Goodwill impairment tests in 2018 and 2017 indicated that goodwill was not impaired for any of the Company’s reporting units, except for the AFE business (the AFE operations were realigned and transferred to Aluminum Extrusions and Engine Products) whose estimated fair value was lower than its carrying value. As such, Arconic recorded an impairment for the full amount of goodwill in the AFE reporting unit of $719 in 2017. The decrease in fair value of AFE was primarily due to unfavorable performance that was impacting operating margins and a higher discount rate due to an increase in the risk-free rate of return, while the carrying value increased compared to prior year. 49