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Benefit Plans, Estimated Amortization of Amounts in Other Accumulated Comprehensive Income (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Pension Benefits [Member] |
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract] |
Amortization of net (gain) loss | $ 11.7
Total costs to be recognized | 11.7
Post-Retirement Benefits [Member] |
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract] |
Amortization of net (gain) loss | (0.6)
Total costs to be recognized | $ (0.6)

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