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Assets Held for Sale and Discontinued Operations (Narrative) (Details) $ in Millions | Dec. 31, 2019 business | Dec. 31, 2018 USD ($) business | Sep. 30, 2018 business | Dec. 31, 2016 USD ($)
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number Of Business Closed | business | 3 | 3 | 3 |
Discontinued Operations, Disposed of by Sale [Member] | KENTUCKY |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  | $ 0.9 |  |
Discontinued Operations, Disposed of by Sale [Member] | Tennessee |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  | $ 0.6

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