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Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Millions | Total | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Common Stock [Member]
--- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 1,893.0 | $ 625.9 | $ (28.2) | $ 1,295.3
Comprehensive Income [Abstract] |  |  |  |
Net Income | 49.0 | 49.0 |  |
Other Comprehensive Income – Net of Tax [Abstract] |  |  |  |
Unrealized Gain on Securities | 0.3 |  | 0.3 |
Defined Benefit Pension and Other Postretirement Plans | 0.2 |  | 0.2 |
Total Comprehensive Income | 49.5 |  |  |
Common Stock Issued | 85.9 |  |  | 85.9
Dividends Declared | (26.9) | (26.9) |  |
Ending Balance at Mar. 31, 2017 | $ 2,001.5 | $ 648.0 | $ (27.7) | $ 1,381.2

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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