CONSOLIDATED BALANCE SHEETS (unaudited) (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 7.1	$ 4.2
Accumulated depreciation of property and equipment	667.9	589.6
Accumulated amortization of intangible assets	254.5	226.5
Accumulated amortization of other assets	$ 90.1	$ 82.6
Preferred stock, par value per share	$ 0.02	$ 0.02
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value per share	$ 0.02	$ 0.02
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	64,947,094	64,788,755
Treasury stock, shares	23,951,023	21,061,140