Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Class of Stock [Line Items]
Treasury stock acquired (in shares)	1.0	1.2	3.4	3.3
Dividends declared (in USD per share)	$ 1.54	$ 1.40	$ 4.48	$ 4.05
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 5,078.1	$ 4,319.6	$ 4,547.6	$ 3,509.1
Net earnings	1,249.5	1,184.9	3,169.0	2,922.7
Other comprehensive income (loss)	342.7	(106.7)	622.3	453.9
Stock-based compensation expense	54.3	48.6	179.3	170.4
Issuances relating to stock compensation plans	60.5	57.5	204.4	146.0
Treasury stock acquired	(301.3)	(301.3)	(1,032.7)	(900.8)
Dividends declared	(628.5)	(575.9)	(1,834.6)	(1,674.6)
Ending balance	5,855.3	4,626.7	5,855.3	4,626.7
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	2,619.6	2,262.9	2,406.9	2,102.3
Stock-based compensation expense	54.3	48.6	179.3	170.4
Issuances relating to stock compensation plans	46.9	42.5	134.6	81.3
Ending balance	2,720.8	2,354.0	2,720.8	2,354.0
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	24,335.6	22,757.1	23,622.2	22,118.0
Net earnings	1,249.5	1,184.9	3,169.0	2,922.7
Dividends declared	(628.5)	(575.9)	(1,834.6)	(1,674.6)
Ending balance	24,956.6	23,366.1	24,956.6	23,366.1
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(20,412.3)	(19,019.1)	(19,737.1)	(18,469.3)
Issuances relating to stock compensation plans	13.6	15.0	69.8	64.7
Treasury stock acquired	(301.3)	(301.3)	(1,032.7)	(900.8)
Ending balance	(20,700.0)	(19,305.4)	(20,700.0)	(19,305.4)
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,528.7)	(1,745.2)	(1,808.3)	(2,305.8)
Other comprehensive income (loss)	342.7	(106.7)	622.3	453.9
Ending balance	$ (1,186.0)	$ (1,851.9)	$ (1,186.0)	$ (1,851.9)