Equity - Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 5,519,210	$ 4,530,978	$ 5,267,346	$ 4,578,678
Net income	366,130	238,847	707,987	690,485
Other comprehensive income (loss)	118,785	118,612	275,102	(64,787)
Dividends paid	(88,145)	(88,171)	(264,332)	(257,161)
Stock incentive plan activity	10,303	(4,383)	40,210	13,360
Acquisition activity		1,843	(30)
Acquisition activity				1,843
Shares purchased at cost	(50,000)	(50,000)	(150,000)	(214,692)
Ending balance	5,876,283	4,747,726	5,876,283	4,747,726
Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	5,513,401	4,527,709	5,261,649	4,575,255
Net income	365,989	238,673	707,545	690,107
Other comprehensive income (loss)	118,690	118,311	275,166	(65,068)
Dividends paid	(88,030)	(88,171)	(264,217)	(256,823)
Stock incentive plan activity	10,303	(4,383)	40,210	13,360
Acquisition activity		0	0
Acquisition activity				0
Shares purchased at cost	(50,000)	(50,000)	(150,000)	(214,692)
Ending balance	5,870,353	4,742,139	5,870,353	4,742,139
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	5,809	3,269	5,697	3,423
Net income	141	174	442	378
Other comprehensive income (loss)	95	301	(64)	281
Dividends paid	(115)	0	(115)	(338)
Stock incentive plan activity	0	0	0	0
Acquisition activity		1,843	(30)
Acquisition activity				1,843
Shares purchased at cost	0	0	0	0
Ending balance	$ 5,930	$ 5,587	$ 5,930	$ 5,587