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Goodwill | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill The following presents our goodwill balance allocated by segment as of March 31, 2020:
(in millions) |  | Gas Distribution Operations |  | Electric Operations |  | Corporate and Other |  | Total
Goodwill |  | $ | 1,485.9 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,485.9 |
For our annual goodwill impairment analysis most recently performed as of May 1, 2019, we completed a qualitative "step 0" analysis for all reporting units other than our Columbia of Massachusetts reporting unit. The results of the step 0 assessment indicated that it was not more likely than not that the fair values of these reporting units were less than their respective carrying values, accordingly, no "step 1" analysis was required. The results of our Columbia of Massachusetts reporting unit were negatively impacted by the Greater Lawrence Incident (see Note 18-B, "Legal Proceedings"). As a result, we completed a quantitative "step 1" analysis for the May 1, 2019 goodwill analysis for this reporting unit. The step 1 analysis performed indicated that the fair value of the Columbia of Massachusetts reporting unit substantially exceeds its carrying value. As a result, no impairment charge was recorded as of the May 1, 2019 test date. During the fourth quarter of 2019, in connection with the preparation of the year-end financial statements, we assessed the matters related to Columbia of Massachusetts and determined a new impairment analysis was required for our Columbia of Massachusetts reporting unit. The December 31, 2019 impairment analysis indicated that the fair value of the Columbia of Massachusetts reporting unit was below its carrying value. As a result, we reduced the Columbia of Massachusetts reporting unit goodwill balance to zero and recognized a goodwill impairment charge totaling $204.8 million in 2019. While our annual goodwill impairment test is performed during the second quarter, with a valuation date of May 1, we continuously monitor changes in circumstances that may indicate that it is more likely than not that the fair value of our reporting units is less than the reporting unit carrying value. During the first quarter of 2020, we assessed events and circumstances related to COVID-19, including, but not limited to, general economic conditions, access to capital, developments in the equity and credit markets, the impact on NiSource's share price, the availability and cost of materials and labor, the impact on revenue and cash flow, and regulatory and political activity. The result of this assessment indicated that it was not more likely than not that the fair values of our reporting units were less than their respective carrying values at March 31, 2020. We have begun our May 1, 2020 annual goodwill impairment analysis. We are assessing various assumptions, events and circumstances that will affect the estimated fair value of our reporting units, including an on-going evaluation of the impact of COVID-19. Our annual goodwill analysis will be completed by the end of the second quarter.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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