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Quarterly Financial Information | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information | Note 2: Quarterly Financial Information (unaudited; millions, except per share data) Quarterly earnings per share may not agree with the annual amounts due to rounding and the impact of additional common share issuances. Basic and Diluted Earnings per Share are the same for the periods presented.
|  | Three Months Ended |
|  | March 31, |  |  | June 30, |  |  | September 30, |  |  | December 31, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Total Operating Revenues |  | $ | 145.8 |  |  | $ | 126.0 |  |  | $ | 84.5 |  |  | $ | 80.8 |  |  | $ | 88.2 |  |  | $ | 84.0 |  |  | $ | 125.6 |  |  | $ | 115.4 |
Operating Income |  | $ | 28.1 |  |  | $ | 27.7 |  |  | $ | 10.6 |  |  | $ | 11.6 |  |  | $ | 10.3 |  |  | $ | 10.4 |  |  | $ | 22.2 |  |  | $ | 25.7 |
Net Income Applicable to Common |  | $ | 15.6 |  |  | $ | 12.4 |  |  | $ | 3.6 |  |  | $ | 3.1 |  |  | $ | 2.8 |  |  | $ | 2.3 |  |  | $ | 11.0 |  |  | $ | 11.2 |
|  | Per Share Data: |
Earnings Per Common Share |  | $ | 1.06 |  |  | $ | 0.88 |  |  | $ | 0.24 |  |  | $ | 0.23 |  |  | $ | 0.19 |  |  | $ | 0.16 |  |  | $ | 0.74 |  |  | $ | 0.79 |
Dividends Paid Per Common Share |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |

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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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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration