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Employee Benefit Plans (Net Periodic Benefit Costs) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service costs	$ 0.1	$ 0.0	$ 0.1	$ 0.0
Interest costs	2.4	2.6	4.8	5.1
Amortization of net actuarial loss	0.5	0.6	1.1	1.1
Net periodic costs	$ 3.0	$ 3.2	$ 6.0	$ 6.2

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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X

- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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