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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 146.4	$ 48.6
Other comprehensive income (loss), net of tax:
Translation adjustments and other	(19.2)	1.4
Unrealized gain (loss) on marketable debt securities	(1.4)	3.7
Total other comprehensive income (loss), net of tax	(20.6)	5.1
Comprehensive income	$ 125.8	$ 53.7

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