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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net (loss) gain arising during the period, tax benefit (provision)	$ (0.9)	$ (1.5)	$ (1.4)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax	0.1	(1.6)	(2.7)
Net earnings	$ 107.7	$ 46.0	$ (28.1)

X

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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