Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 5,670.1	$ 5,752.2
Net earnings	700.5	602.1
Other comprehensive income	(133.5)	30.7
Stock-based compensation expense	39.5	35.1
Issuances relating to stock compensation plans	68.3	44.8
Treasury stock acquired	$ (597.4)	$ (262.3)
Treasury stock acquired (shares)	2.6	1.7
Dividends declared	$ (396.8)	$ (393.7)
Dividends declared (in US$ per share)	$ 0.93	$ 0.91
Ending balance	$ 5,350.7	$ 5,808.9
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	1,531.3	1,333.8
Stock-based compensation expense	39.5	35.1
Issuances relating to stock compensation plans	8.3	(20.5)
Ending balance	1,579.1	1,348.4
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	19,451.1	18,436.3
Net earnings	700.5	602.1
Dividends declared	(396.8)	(393.7)
Ending balance	19,754.8	18,644.7
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(15,386.8)	(14,067.0)
Issuances relating to stock compensation plans	60.0	65.3
Treasury stock acquired	(597.4)	(262.3)
Ending balance	(15,924.2)	(14,264.0)
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	10.6	(14.8)
Other comprehensive income	(133.5)	30.7
Ending balance	$ (122.9)	$ 15.9