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Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 30.6	$ 27.8	$ 59.4	$ 54.1
Technology & Shopping
Finite-Lived Intangible Assets [Line Items]
Goodwill accumulated impairment loss	$ 169.5		$ 169.5		$ 169.5

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