Fair Value - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges		$ 1.9	$ 28.3
Long-term fixed-rate debt, fair value	$ 1,655.6	1,655.6		$ 1,387.7
Long-term fixed-rate debt, carrying value	1,699.4	1,699.4		$ 1,424.3
Held-for-Sale \| Engineering-Related Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	2.1	2.1
Business fair value	0.2	$ 0.2
Impairment charges	$ 1.9

Disposal Group, Including Discontinued Operation, Assets (Liabilities), Net, Before Impairment Charge

No definition available.

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- Definition

Disposal Group, Including Discontinued Operation, Assets (Liabilities), Net, Before Impairment Charge, Fair Value Disclosure

+ References

No definition available.

+ Details

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- Definition

Represents the carrying value of the company's long-term, fixed-rate debt as of the reporting period date.

+ References

No definition available.

+ Details

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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- Details

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