Equity - Changes in accumulated other comprehensive (loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2021		Jun. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]	$ 6,241,770	[2]	$ 6,085,764
Ending balance	[1]	8,413,670		6,241,770	[2]
Foreign Currency Translation Adjustment and Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(1,193,937)		(1,011,656)
Other comprehensive (loss) before reclassifications		328,072		(182,281)
Amounts reclassified from accumulated other comprehensive (loss)		0		0
Ending balance		(865,865)		(1,193,937)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(1,364,938)		(1,047,392)
Other comprehensive (loss) before reclassifications		502,853		(447,161)
Amounts reclassified from accumulated other comprehensive (loss)		161,223		129,615
Ending balance		(700,862)		(1,364,938)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	[1]	(2,558,875)		(2,059,048)
Other comprehensive (loss) before reclassifications		830,925		(629,442)
Amounts reclassified from accumulated other comprehensive (loss)		161,223		129,615
Ending balance		$ (1,566,727)		$ (2,558,875)	[1]

[1] *The balances at June 30, 2018 and the year ended June 30, 2020 and 2019 amounts have been revised to reflect the change in inventory accounting method, as described in Notes 1 and 7 to the consolidated financial statements.

[2] *Year ended June 30, 2020 amounts have been adjusted to reflect the change in inventory accounting method, as described in Notes 1 and 7 to the Consolidated Financial Statements.