Equity - Reclassifications out of accumulated other comprehensive income (loss) in shareholders' equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income), net	$ 103,714	$ 13,549	$ 108,606	$ 61,070
Income before income taxes	576,512	254,746	991,807	687,902
Tax benefit	(129,015)	(50,148)	(222,593)	(144,263)
Net income	447,497	204,598	769,214	543,639
Reclassification out of Accumulated Other Comprehensive Income (Loss) | Amortization of prior service cost and initial net obligation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income), net	(1,420)	(1,284)	(2,238)	(2,767)
Reclassification out of Accumulated Other Comprehensive Income (Loss) | Recognized actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income), net	(52,763)	(42,703)	(105,028)	(82,188)
Reclassification out of Accumulated Other Comprehensive Income (Loss) | Retirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before income taxes	(54,183)	(43,987)	(107,266)	(84,955)
Tax benefit	13,199	10,571	26,130	20,513
Net income	$ (40,984)	$ (33,416)	$ (81,136)	$ (64,442)