Goodwill and Other Intangible Assets - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2024
Intangible Asset, Goodwill and Other [Abstract]
Goodwill	$ 348.7	$ 348.8	$ 348.6	$ 393.5
Total other intangible assets, net	436.9	451.2
Total goodwill and other intangible assets, net	$ 785.6	$ 800.0

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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