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Pension and Postretirement Benefits - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Pension Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated cash contributions by the company for current fiscal year	$ 20.0
Cash contributions, pension plans	10.3	$ 28.4	$ 42.4
Postretirement Benefit Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated cash contributions by the company for current fiscal year	4.0
Cash contributions, postretirement benefits	$ 2.1	$ 2.7	$ 5.6

X

- Definition

Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

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Amount of cash outflow for other postretirement benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes pension benefit.

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Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

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