Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 2,576.5	$ 5,350.7	$ 3,225.3	$ 5,670.1
Net earnings	813.1	694.4	1,592.2	1,394.9
Other comprehensive income	273.2	(205.5)	(457.2)	(339.0)
Stock-based compensation expense	51.0	47.6	97.0	87.0
Issuances relating to stock compensation plans	16.3	58.4	109.5	126.8
Treasury stock acquired	$ (224.3)	$ (458.6)	$ (624.6)	$ (1,056.0)
Treasury stock acquired (shares)	0.9	2.0	2.3	4.6
Dividends declared	$ (519.1)	$ (437.4)	$ (955.5)	$ (834.2)
Dividends declared (in US$ per share)	$ 1.25	$ 1.04	$ 2.29	$ 1.97
Ending balance	$ 2,986.7	$ 5,049.6	$ 2,986.7	$ 5,049.6
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	1,893.1	1,579.1	1,794.2	1,531.3
Stock-based compensation expense	51.0	47.6	97.0	87.0
Issuances relating to stock compensation plans	10.1	38.0	63.0	46.4
Ending balance	1,954.2	1,664.7	1,954.2	1,664.7
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	21,039.0	19,754.8	20,696.3	19,451.1
Net earnings	813.1	694.4	1,592.2	1,394.9
Dividends declared	(519.1)	(437.4)	(955.5)	(834.2)
Ending balance	21,333.0	20,011.8	21,333.0	20,011.8
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(17,695.4)	(15,924.2)	(17,335.4)	(15,386.8)
Issuances relating to stock compensation plans	6.2	20.4	46.5	80.4
Treasury stock acquired	(224.3)	(458.6)	(624.6)	(1,056.0)
Ending balance	(17,913.5)	(16,362.4)	(17,913.5)	(16,362.4)
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(2,724.1)	(122.9)	(1,993.7)	10.6
Other comprehensive income	273.2	(205.5)	(457.2)	(339.0)
Ending balance	$ (2,450.9)	$ (328.4)	$ (2,450.9)	$ (328.4)