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Pension Plans - Qualified and Non-Qualified Plans - Adjustments to Equity (Details) - Pension Plan [Member] - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Defined Benefit Plan Disclosure [Line Items] |  |  |
Change in equity as a result of change in deferred net loss | $ 2.1 | $ (1.3) | $ 4.5
Change in equity as result of change in deferred net loss taxes | $ 0.5 | $ (0.4) | $ 1.5

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- Definition Increase or decrease in equity as a result of the change in deferred net loss. + References No definition available. + Details
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- Definition Tax effect of the change in equity as a result of the change in deferred net loss. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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