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Quarterly Financial Data | 12 Months Ended
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Dec. 31, 2020
Quarterly Financial Data [Abstract] |
Quarterly Financial Data (Unaudited) | Quarterly Financial Data (Unaudited) Quarterly financial data does not always reveal the trend of our business operations due to nonrecurring items and seasonal weather patterns, which affect earnings and related components of revenue and operating income.
(in millions, except per share data) | First Quarter(1) |  | Second Quarter(2) |  | Third Quarter(3) |  | Fourth Quarter(4)
2020 |  |  |  |  |  |  |
Operating Revenues | $ | 1,605.5 |  |  | $ | 962.7 |  |  | $ | 902.5 |  |  | $ | 1,211.0 |
Operating Income | 148.2 |  |  | 91.7 |  |  | 92.8 |  |  | 218.1 |
Net Income (Loss) | 75.6 |  |  | (4.7) |  |  | (172.9) |  |  | 87.8 |
Net income attributable to noncontrolling interest | — |  |  | — |  |  | — |  |  | 3.4 |
Net Income (Loss) attributable to NiSource | 75.6 |  |  | (4.7) |  |  | (172.9) |  |  | 84.4 |
Preferred Dividends | (13.8) |  |  | (13.8) |  |  | (13.8) |  |  | (13.7) |
Net Income (Loss) Available to Common Shareholders | 61.8 |  |  | (18.5) |  |  | (186.7) |  |  | 70.7 |
Earnings (Loss) Per Share |  |  |  |  |  |  |
Basic Earnings (Loss) Per Share | $ | 0.16 |  |  | $ | (0.05) |  |  | $ | (0.49) |  |  | $ | 0.18 |
Diluted Earnings (Loss) Per Share | $ | 0.16 |  |  | $ | (0.05) |  |  | $ | (0.49) |  |  | $ | 0.18 |
2019 |  |  |  |  |  |  |
Operating Revenues | $ | 1,869.8 |  |  | $ | 1,010.4 |  |  | $ | 931.5 |  |  | $ | 1,397.2 |
Operating Income (Loss) | 374.2 |  |  | 463.5 |  |  | 91.0 |  |  | (38.0) |
Net Income (Loss) | 218.9 |  |  | 296.9 |  |  | 6.6 |  |  | (139.3) |
Preferred Dividends | (13.8) |  |  | (13.8) |  |  | (13.8) |  |  | (13.7) |
Net Income (Loss) Available to Common Shareholders | 205.1 |  |  | 283.1 |  |  | (7.2) |  |  | (153.0) |
Earnings (Loss) Per Share |  |  |  |  |  |  |
Basic Earnings (Loss) Per Share | $ | 0.55 |  |  | $ | 0.76 |  |  | $ | (0.02) |  |  | $ | (0.41) |
Diluted Earnings (Loss) Per Share | $ | 0.55 |  |  | $ | 0.75 |  |  | $ | (0.02) |  |  | $ | (0.41) |
(1) Net income for the first quarter of 2020 was impacted by $280.2 million loss on sale of the Massachusetts Business. Net income for the first quarter of 2019 was impacted by $108.0 million in insurance recoveries (pretax) related to the Greater Lawrence Incident. See Note 1, "Company Structure and Principles of Consolidation" and Note 20-E, "Other Matters" for additional information. (2) Net income for the second quarter of 2020 was impacted by an additional $84.4 million loss on sale of the Massachusetts Business. Net income for the second quarter of 2019 was impacted by $297.0 million in insurance recoveries (pretax) related to the Greater Lawrence Incident. See Note 1, "Company Structure and Principles of Consolidation" and Note 20-E, "Other Matters" for additional information. (3) Net loss for the third quarter of 2020 was impacted by $243.4 million loss on early extinguishments of long-term debt. See Note 15, "Long-Term Debt" for additional information. (4) Net loss for the fourth quarter of 2019 was impacted by an impairment charge of $204.8 million for goodwill and an impairment charge of $209.7 million for franchise rights, in each case related to Columbia of Massachusetts. For additional information, see Note 7, "Goodwill and Other Intangible Assets."

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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