Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 3,509.1	$ 3,225.3
Net earnings	859.4	779.0
Other comprehensive income	(162.0)	(730.4)
Stock-based compensation expense	54.0	46.0
Issuances relating to stock compensation plans	81.8	93.2
Treasury stock acquired	$ (347.5)	$ (400.3)
Treasury stock acquired (shares)	1.0	1.4
Dividends declared	$ (522.0)	$ (436.3)
Dividends declared (in US$ per share)	$ 1.25	$ 1.04
Ending balance	$ 3,472.8	$ 2,576.5
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	63.9	63.9
Ending balance	63.9	63.9
Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,102.3	1,794.2
Stock-based compensation expense	54.0	46.0
Issuances relating to stock compensation plans	32.4	52.9
Ending balance	2,188.7	1,893.1
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	22,118.0	20,696.3
Net earnings	859.4	779.0
Dividends declared	(522.0)	(436.3)
Ending balance	22,455.4	21,039.0
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(18,469.3)	(17,335.4)
Issuances relating to stock compensation plans	49.4	40.3
Treasury stock acquired	(347.5)	(400.3)
Ending balance	(18,767.4)	(17,695.4)
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(2,305.8)	(1,993.7)
Other comprehensive income	(162.0)	(730.4)
Ending balance	$ (2,467.8)	$ (2,724.1)