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Goodwill and Other Intangible Assets - Carrying Amounts of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,263.2	$ 1,237.0	$ 1,228.2
Acquisitions	18.1	26.2	8.8
Goodwill, ending balance	$ 1,281.3	$ 1,263.2	$ 1,237.0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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