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Income Taxes - Net Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Deferred income taxes	$ 9.2	$ 7.4
Other noncurrent liabilities	0.0	1.3
Net unrecognized tax benefits	9.2	8.7
Gross unrecognized tax benefits	$ 9.2	$ 8.7	$ 9.5	$ 11.0

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- Definition

Net Unrecognized Tax Benefit

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- Definition

Unrecognized Tax Benefit Recorded in Deferred Income Taxes

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- Definition

Unrecognized Tax Benefit Recorded in Other Noncurrent Liabilities

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482525/740-10-45-10B

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