Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Class of Stock [Line Items]
Treasury stock acquired (in shares)	1.9	0.9	3.2	2.4
Dividends declared (in dollars per share)	$ 1.70	$ 1.54	$ 3.24	$ 2.94
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 6,373.8	$ 5,348.6	$ 6,188.0	$ 4,547.6
Net earnings	1,062.0	963.2	2,075.1	1,919.5
Other comprehensive income/(loss)	91.0	(428.5)	243.7	279.6
Stock-based compensation expense	66.3	70.2	123.6	125.0
Issuances relating to stock compensation plans	2.9	27.3	60.6	143.9
Treasury stock acquired	(511.2)	(273.9)	(974.9)	(731.4)
Dividends declared	(691.8)	(628.8)	(1,323.1)	(1,206.1)
Ending balance	6,393.0	5,078.1	6,393.0	5,078.1
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	63.9	63.9	63.9	63.9
Ending balance	63.9	63.9	63.9	63.9
Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,868.0	2,528.6	2,788.3	2,406.9
Stock-based compensation expense	66.3	70.2	123.6	125.0
Issuances relating to stock compensation plans	2.5	20.8	24.9	87.7
Ending balance	2,936.8	2,619.6	2,936.8	2,619.6
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	25,622.4	24,001.2	25,240.6	23,622.2
Net earnings	1,062.0	963.2	2,075.1	1,919.5
Dividends declared	(691.8)	(628.8)	(1,323.1)	(1,206.1)
Ending balance	25,992.6	24,335.6	25,992.6	24,335.6
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(21,449.8)	(20,144.9)	(21,021.4)	(19,737.1)
Issuances relating to stock compensation plans	0.4	6.5	35.7	56.2
Treasury stock acquired	(511.2)	(273.9)	(974.9)	(731.4)
Ending balance	(21,960.6)	(20,412.3)	(21,960.6)	(20,412.3)
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(730.7)	(1,100.2)	(883.4)	(1,808.3)
Other comprehensive income/(loss)	91.0	(428.5)	243.7	279.6
Ending balance	$ (639.7)	$ (1,528.7)	$ (639.7)	$ (1,528.7)