Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment reporting information
Stock-based compensation expense	$ (34.2)	$ (26.6)
Acquisition-related expenses	(116.9)	(44.0)
Operating income	1,831.8	1,024.8
Interest expense	(207.9)	(76.5)
Other income (expense), net	21.8	14.6
Income before income taxes	1,645.7	962.9
Operating Segment
Segment reporting information
Operating income	2,144.4	1,176.5
Interest expense	(207.9)	(76.5)
Other income (expense), net	21.8	14.6
Corporate / Other
Segment reporting information
Stock-based compensation expense	(34.2)	(26.6)
Amortization of acquisition-related inventory step-up costs	(132.0)	(60.9)
Acquisition-related expenses	(116.9)	(44.0)
Other operating expenses	$ (29.5)	$ (20.2)