Equity - Changes in equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 8,505,845	$ 6,655,884	[1],[2],[3],[4],[5],[6],[7]	$ 8,413,670	$ 6,241,770	[1],[2],[3],[4],[5],[6],[7]
Net income	387,729	448,542	[1],[2],[3],[4],[5],[6],[7]	839,192	768,653	[1],[2],[3],[4],[5],[6],[7]
Other comprehensive income (loss)	60,350	258,812	[1],[2],[3],[4],[5],[6],[7]	21,048	429,646	[1],[2],[3],[4],[5],[6],[7]
Dividends paid	$ (132,635)	$ (113,686)	[1],[2],[3],[4],[5],[6],[7]	$ (265,556)	$ (227,228)	[1],[2],[3],[4],[5],[6],[7]
Dividends paid (in USD per share)	$ 1.03	$ 0.88		$ 2.06	$ 1.76
Stock incentive plan activity	$ (1,061)	$ (14,567)	[1],[2],[3],[4],[5],[6],[7]	$ 42,208	$ 22,144	[1],[2],[3],[4],[5],[6],[7]
Liquidation activity	(1,948)			(1,948)
Shares purchased at cost	(50,000)			(280,334)
Ending balance	8,768,280	7,234,985	[1],[2],[3],[4],[5],[6],[7]	8,768,280	7,234,985	[1],[2],[3],[4],[5],[6],[7]
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	358,677	428,329		329,619	416,585
Stock incentive plan activity	(14,365)	(43,280)		14,693	(31,536)
Ending balance	344,312	385,049		344,312	385,049
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	15,233,799	13,850,168		14,915,497	13,643,907
Net income	387,600	448,351		838,757	768,154
Dividends paid	(132,635)	(113,686)		(265,490)	(227,228)
Ending balance	15,488,764	14,184,833		15,488,764	14,184,833
Accumulated Other Comprehensive (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(1,605,490)	(2,388,472)		(1,566,727)	(2,558,875)
Other comprehensive income (loss)	60,397	257,966		21,634	428,369
Ending balance	(1,545,093)	(2,130,506)		(1,545,093)	(2,130,506)
Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(5,586,728)	(5,339,949)		(5,370,605)	(5,364,916)
Stock incentive plan activity	13,304	28,713		27,515	53,680
Shares purchased at cost	(50,000)			(280,334)
Ending balance	(5,623,424)	(5,311,236)		(5,623,424)	(5,311,236)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	15,064	15,285		15,363	14,546
Net income	129	191		435	499
Other comprehensive income (loss)	(47)	846		(586)	1,277
Dividends paid				(66)
Liquidation activity	(1,948)			(1,948)
Ending balance	$ 13,198	$ 16,322		$ 13,198	$ 16,322

[1] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[2] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[3] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[4] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[5] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[6] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.

[7] *Prior period has been adjusted to reflect the change in inventory accounting method, as described in the Company's fiscal 2021 Annual Report on Form 10-K.