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Retirement Plans and Postretirement Benefit Plans - Summary of Reconciliation of Postretirement Benefit Plans Investments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 Asset Value, Beginning of Period	$ 16.8
Claims paid	(4.1)
Realized losses	(1.5)
Investment fees	(0.1)
Interest income	0.6
Net unrealized gains related to instruments held at the reporting date	1.9
Level 3 Asset Value, End of Period	$ 13.6

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- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Administrative Expenses and Charges

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Interest Income

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Fair value, measurement with unobservable inputs reconciliation, recurring basis, net unrealized gains related to instruments held.

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Realized Gains (Losses)

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 101
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-101

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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