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Benefit Plans - Amounts Recognized in Other Comprehensive In Loss (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net actuarial loss (gain)	$ 10.8	$ 14.4
Prior service credit	(1.2)	(1.2)
Total	9.6	13.2
Other retirement benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net actuarial loss (gain)	(1.6)	(2.6)
Prior service credit	0.0	0.0
Total	$ (1.6)	$ (2.6)

X

- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

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- Definition

Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

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- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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