Statements of Consolidated Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net actuarial gains (losses) and prior service costs arising during period, tax	$ (33.8)	$ (12.6)	$ 3.4
Pension and other post retirement benefit adjustments, reclassification tax	(1.2)	(2.1)	(0.4)
Unrealized holding losses on cash flow hedges, amounts reclassified from other comprehensive loss, tax	1.1	1.0	2.2
Net Investment Hedging
Foreign currency translation adjustments	$ 34.1	$ 37.1	$ (54.0)

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.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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

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

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