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Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Statement [Abstract] |  |  |  |
Reclassification adjustments to cash flow hedges included in net income, tax | $ 0.3 | $ 0.3 | $ 1.0 | $ 1.0
Amortization of pension and postretirement plans actuarial loss and prior service cost, tax | $ 0.8 | $ 1.0 | $ 2.4 | $ 3.0

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- Definition Tax effect of the adjustment out of other comprehensive income for prior service costs and net loss recognized as a component of net periodic benefit cost during the period. + References No definition available. + Details
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- Definition Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 + Details
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