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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) Parenthetical - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Pension Plan and Restoration of Retirement Income Plan: |  |  |  |
Other Comprehensive Income Amortization Of Defined Benefit Pension Plans Net Prior Service Cost Recognized in Net Periodic Pension Cost, Tax | $ 0.1 | $ 0.0 | $ 0.1 | $ 0.0
Amortization of deferred net loss | 0.0 | 0.2 | 0.3 | 0.6
Other Comprehensive Income (Loss), Defined Benefit Plan, Adjustment for Settlement or Curtailment Gain (Loss), Tax | 0.5 | 0.3 | 2.9 | 1.9
Postretirement Benefit Plans: |  |  |  |
Amortization of prior service cost | (0.1) | (0.1) | (0.1) | (0.3)
Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax | 0.0 | 0.0 | 0.0 | 0.0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.1

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