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Pension And Other Postretirement Benefits (Narrative) (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($)
Pension Plan |
Defined Benefit Plan Disclosure [Line Items] |
Employer contributions | $ 0.8
Other Postretirement Benefit Plan |
Defined Benefit Plan Disclosure [Line Items] |
Employer contributions | $ 6.3

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