Acquisitions, Goodwill and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 14.4	$ 17.7
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2025 (April 1 through December 31)	44.7
2026	55.5
2027	48.9
2028	45.0
2029	42.0
Thereafter	184.3
Total	$ 420.4		$ 408.8

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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