CONSOLIDATED CONDENSED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) (Parentheticals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Discontinued Operation, Tax Effect of Discontinued Operation	$ (0.1)	$ (0.1)	$ 0.0	$ (0.2)
Net change in postretirement benefit plans, Tax Benefits	0.4	0.4	0.8	0.9
Amortization of prior service costs, Tax (Expense) Benefit	(0.3)	(0.5)	(0.5)	(1.0)
Amortization of net actuarial loss, Tax Benefits	$ 0.7	$ 0.9	$ 1.3	$ 1.9

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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