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, 2022	$ 16,037.8	$ 1.1	$ 2,510.2	$ 13,730.7	$ (187.0)	$ (17.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	995.2			995.2
Stock option exercises	111.7		111.7
Treasury stock sold	11.6		11.3			0.3
Currency translation adjustments	10.2				10.2
Stock-based compensation	101.9		101.9
Restricted stock activity	(11.3)		(11.3)
Dividends declared	(218.4)			(218.4)
Balance at end of period at Sep. 30, 2023	17,038.7	1.1	2,723.8	14,507.5	(176.8)	(16.9)
Balance at beginning of period at Jun. 30, 2023	16,745.9	1.1	2,655.3	14,233.2	(126.7)	(17.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	347.2			347.2
Stock option exercises	29.9		29.9
Treasury stock sold	3.2		3.1			0.1
Currency translation adjustments	(50.1)				(50.1)
Stock-based compensation	36.7		36.7
Restricted stock activity	(1.2)		(1.2)
Dividends declared	(72.9)			(72.9)
Balance at end of period at Sep. 30, 2023	17,038.7	1.1	2,723.8	14,507.5	(176.8)	(16.9)
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)