of assets is determined as either the expected selling price less selling costs (where appropriate) or the present value of the estimated future cash flows, adjusted as necessary for market participant factors.
We recorded impairment charges primarily related to long-lived assets and definite lived intangible assets of $34.5 million and $133.8 million during the three and nine months ended September 30, 2020, respectively. There are a number of estimates and significant judgments that are made by management in performing these impairment evaluations. Such judgments and estimates include estimates of future attendance, revenues, rent relief, cost savings, cash flows, capital expenditures, and the cost of capital, among others. Attendance is expected to be significantly below historical levels following reopening with limited seating capacities and social distancing guidelines and studios have postponed new film releases or moved them to the home video market, and movie release dates may continue to move in the future. We believe we have used reasonable and appropriate business judgments. There is considerable management judgment with respect to cash flow estimates and appropriate discount rates to be used in determining fair value, and, accordingly, actual results could vary significantly from such estimates, which fall under Level 3 within the fair value measurement hierarchy. These estimates determine whether impairments have been incurred, and quantify the amount of any related impairment charge. Given the nature of our business and our recent history, future impairments are possible and they may be material, based upon business conditions that are constantly changing and the competitive business environment in which we operate.
We recorded non-cash impairment of long-lived assets of $28.1 million on 49 theatres in the U.S. markets with 527 screens (in Alabama, California, Colorado, Florida, Illinois, Indiana, Iowa, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Wisconsin, Wyoming) and $0 in the International markets during the three months ended September 30, 2020. During the nine months ended September 30, 2020, we recorded non-cash impairment of long-lived assets of $109.5 million on 75 theatres in the U.S. markets with 851 screens (in Alabama, Arkansas, California, Colorado, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, Washington, Wisconsin and Wyoming) and $9.9 million on 23 theatres in the International markets with 213 screens (in Germany, Italy, Spain, UK and Sweden), respectively. During the three and nine months ended September 30, 2020, we recorded impairment losses related to definite-lived intangible assets of $6.4 million and $14.4 million, respectively. In addition, we recorded an impairment loss of $0 and $7.2 million within investment expense (income), related to equity interest investments without a readily determinable fair value accounted for under the cost method during the three and nine months ended September 30, 2020, respectively.
At September 30, 2020 and March 31, 2020, we performed a quantitative impairment evaluation of our indefinite-lived intangible assets related to the AMC, Odeon and Nordic tradenames and recorded impairment charges of $4.5 million and $10.4 million related to Odeon tradename and $0.1 million and $2.5 million related to Nordic for the three and nine months ended September 30, 2020, respectively. No impairment charges were recorded related to the AMC trade name for the three and nine months ended September 30, 2020. To estimate fair value of our indefinite-lived trade names, we employed a derivation of the Income Approach known as the Royalty Savings Method. The Royalty Savings Method values an intangible asset by estimating the royalties saved through ownership of the asset. At September 30, 2020 and March 31, 2020, we applied royalty rates of 0.5% for AMC and Odeon tradenames and 1.0% for Nordic to the related theatre revenues on an after-tax basis using effective tax rates. At September 30, 2020, related cash flows were discounted at 13.0% for AMC and 14.0% for Odeon and Nordic, and at March 31, 2020, related cash flows were discounted at 12.5% for AMC and 14.0% for Odeon and Nordic.
Goodwill. We evaluate the goodwill recorded at our two reporting units (Domestic Theatres and International Theatres) for impairment annually as of the beginning of the fourth fiscal quarter or more frequently as specific events or circumstances dictate. Our market capitalization has been below carrying value since May 24, 2019.
In accordance with ASC 350-20-35-30, we performed an assessment to determine whether there were any events or changes in circumstances that would warrant an interim ASC 350 impairment analysis as of September 30, 2020, June 30, 2020, and March 31, 2020.
Based on the suspension of operations at all of our theatres on or before March 17, 2020 due to the COVID-19 pandemic during the first quarter of 2020, the suspension of operations during the second and third quarters of 2020 for a longer period of time and the further delay or cancellation of film releases than originally estimated, we performed the Step 1 quantitative goodwill impairment test as of September 30, 2020. The impairment test for goodwill involves estimating the fair value of the reporting unit and comparing that value to its carrying value. If the estimated fair value