Equity - Changes in equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 11,312,379	$ 9,334,476	$ 10,338,279	$ 8,859,920
Net income	726,734	590,960	2,059,863	1,374,458
Other comprehensive (loss) income	(167,550)	90,742	(115,118)	154,394
Dividends paid	(190,468)	(170,872)	(571,583)	(513,231)
Stock incentive plan activity	(31,508)	(2,141)	40,161	67,624
Acquisition activity			(2,014)
Shares purchased at cost	(49,166)	(50,000)	(149,167)	(150,000)
Ending balance	$ 11,600,421	$ 9,793,165	$ 11,600,421	$ 9,793,165
Dividends paid (in USD per share)	$ 1.48	$ 1.33	$ 4.44	$ 3.99
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 90,523	$ 90,523	$ 90,523	$ 90,523
Ending balance	90,523	90,523	90,523	90,523
Additional Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	352,817	377,871	305,522	327,307
Stock incentive plan activity	(57,087)	(22,117)	(10,207)	28,447
Acquisition activity			415
Ending balance	295,730	355,754	295,730	355,754
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	17,993,453	16,102,883	17,041,502	15,661,808
Net income	726,574	590,889	2,059,252	1,373,980
Dividends paid	(190,468)	(170,872)	(571,195)	(512,888)
Ending balance	18,529,559	16,522,900	18,529,559	16,522,900
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,241,216)	(1,479,669)	(1,292,872)	(1,543,198)
Other comprehensive (loss) income	(167,158)	91,041	(115,502)	154,570
Ending balance	(1,408,374)	(1,388,628)	(1,408,374)	(1,388,628)
Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(5,892,999)	(5,769,228)	(5,817,787)	(5,688,429)
Stock incentive plan activity	25,579	19,976	50,368	39,177
Shares purchased at cost	(49,166)	(50,000)	(149,167)	(150,000)
Ending balance	(5,916,586)	(5,799,252)	(5,916,586)	(5,799,252)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	9,801	12,096	11,391	11,909
Net income	160	71	611	478
Other comprehensive (loss) income	(392)	(299)	384	(176)
Dividends paid			(388)	(343)
Acquisition activity			(2,429)
Ending balance	$ 9,569	$ 11,868	$ 9,569	$ 11,868