CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares and Additional Paid in Capital	Treasury Stock	Retained Earnings	Accumulated  Other Comprehensive Income	Non-Controlling Interests	Adjustment	Adjustment Retained Earnings
Beginning balance (in shares) at Jun. 30, 2019		269,834,000	(803,000)
Beginning balance at Jun. 30, 2019	$ 3,884,670	$ 1,774,214	$ (28,766)	$ 2,113,883	$ 24,124	$ 1,215
Issuance of Common Shares
Under employee stock option plans (in shares)		184,000
Under employee stock option plans	4,576	$ 4,576
Under employee stock purchase plans (in shares)		172,000
Under employee stock purchase plans	6,008	$ 6,008
Share-based compensation	$ 6,891	$ 6,891
Purchase of treasury stock (in shares)	(300,000)		(300,000)
Purchase of treasury stock	$ (12,424)		$ (12,424)
Dividends declared	(47,006)			(47,006)
Other comprehensive income - net	(9,028)				(9,028)
Net income for the quarter	74,427			74,401		26
Ending balance (in shares) at Sep. 30, 2019		270,190,000	(1,103,000)
Ending balance at Sep. 30, 2019	$ 3,908,114	$ 1,791,689	$ (41,190)	2,141,278	15,096	1,241
Accounting Standards Update	us-gaap:AccountingStandardsUpdate201613Member
Beginning balance (in shares) at Jun. 30, 2019		269,834,000	(803,000)
Beginning balance at Jun. 30, 2019	$ 3,884,670	$ 1,774,214	$ (28,766)	2,113,883	24,124	1,215
Ending balance (in shares) at Jun. 30, 2020		271,863,000	(622,000)
Ending balance at Jun. 30, 2020	$ 4,006,709	$ 1,851,777	$ (23,608)	2,159,396	17,825	1,319	$ (2,450)	$ (2,450)
Accounting Standards Update	us-gaap:AccountingStandardsUpdate201613Member
Issuance of Common Shares
Under employee stock option plans (in shares)	310,521	311,000
Under employee stock option plans	$ 8,605	$ 8,605
Under employee stock purchase plans (in shares)			193,000
Under employee stock purchase plans	6,983	293	$ 6,690
Share-based compensation	$ 11,736	$ 11,736
Purchase of treasury stock (in shares)	(965,154)		(965,000)
Purchase of treasury stock	$ (41,870)		$ (41,870)
Dividends declared	(47,269)			(47,269)
Other comprehensive income - net	21,870				21,870
Net income for the quarter	103,406			103,376		30
Ending balance (in shares) at Sep. 30, 2020		272,174,000	(1,394,000)
Ending balance at Sep. 30, 2020	$ 4,067,720	$ 1,872,411	$ (58,788)	$ 2,213,053	$ 39,695	$ 1,349