Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock
Balance at beginning of period at Dec. 31, 2023	$ 17,444.8	$ 1.1	$ 2,767.0	$ 14,816.3	$ (122.8)	$ (16.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,087.0			1,087.0
Stock option exercises	104.3		104.3
Treasury stock sold	14.5		14.2			0.3
Currency translation adjustments	15.4				15.4
Stock-based compensation	113.2		113.2
Restricted stock activity	(21.8)		(21.8)
Dividends declared	(241.9)			(241.9)
Balance at end of period at Sep. 30, 2024	18,515.5	1.1	2,976.9	15,661.4	(107.4)	(16.5)
Balance at beginning of period at Jun. 30, 2024	18,139.0	1.1	2,923.0	15,374.3	(142.8)	(16.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	367.9			367.9
Stock option exercises	14.3		14.3
Treasury stock sold	4.2		4.1			0.1
Currency translation adjustments	35.4				35.4
Stock-based compensation	39.2		39.2
Restricted stock activity	(3.7)		(3.7)
Dividends declared	(80.8)			(80.8)
Balance at end of period at Sep. 30, 2024	18,515.5	1.1	2,976.9	15,661.4	(107.4)	(16.5)
Balance at beginning of period at Dec. 31, 2024	18,867.6	1.1	3,014.6	16,034.9	(166.5)	(16.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,107.9			1,107.9
Stock option exercises	97.5		97.5
Treasury stock sold	17.4		17.0			0.4
Equity consideration for business acquisition	7.3		7.2			0.1
Currency translation adjustments	56.5				56.5
Stock-based compensation	126.9		126.9
Restricted stock activity	(20.5)		(20.5)
Dividends declared	(267.8)			(267.8)
Balance at end of period at Sep. 30, 2025	19,992.8	1.1	3,242.7	16,875.0	(110.0)	(16.0)
Balance at beginning of period at Jun. 30, 2025	19,633.9	1.1	3,187.1	16,565.9	(104.1)	(16.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	398.5			398.5
Stock option exercises	6.1		6.1
Treasury stock sold	4.9		4.8			0.1
Currency translation adjustments	(5.9)				(5.9)
Stock-based compensation	45.7		45.7
Restricted stock activity	(1.0)		(1.0)
Dividends declared	(89.4)			(89.4)
Balance at end of period at Sep. 30, 2025	$ 19,992.8	$ 1.1	$ 3,242.7	$ 16,875.0	$ (110.0)	$ (16.0)