Reportable Business Segments and International Operations, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment reporting information
Acquisition-related expenses	$ (103.4)	$ (127.4)	$ (34.6)
Operating income	5,868.6	3,156.9	2,559.6
Interest expense	(367.8)	(217.0)	(139.5)
Gain on bargain purchase acquisition	0.0	0.0	5.4
Other income (expense), net	99.9	72.0	29.3
Income before income taxes	5,600.7	3,011.9	2,454.8
Operating Segment
Segment reporting information
Operating income	6,293.1	3,488.7	2,761.1
Interest expense	(367.8)	(217.0)	(139.5)
Gain on bargain purchase acquisition	0.0	0.0	5.4
Other income (expense), net	99.9	72.0	29.3
Corporate / Other
Segment reporting information
Stock-based compensation expense	(135.4)	(109.5)	(99.0)
Amortization of acquisition-related inventory step-up costs	(77.8)	(18.2)	0.0
Acquisition-related expenses	(103.4)	(127.4)	(34.6)
Other operating expenses	$ (107.9)	$ (76.7)	$ (67.9)