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Pension And Other Postretirement Benefit Plans Pension And Other Postretirement Benefit Plans (Narrative) (Details) $ in Millions | 9 Months Ended
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Dec. 31, 2018 USD ($)
Pension and Other Postretirement Benefits [Line Items] |
Contributions to qualified and non-qualified pension plans | $ 21.9
Expected additional contributions in the current fiscal year | $ 7.7

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