Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Beginning Balance	$ 1,668,221	$ 1,658,641
Net income	47,047	73,573
Other comprehensive income (loss)	25,890	(78,178)
Dividend reinvestment	70	67
Capital stock issued under employee benefit and stock plans	10,741	11,141
Purchase of capital stock	(26,034)	(66,650)
Cash dividends paid	(12,924)	(9,849)
Purchase of noncontrolling interests	(479)
Ending Balance	1,712,532	1,588,745
Capital stock [Member]
Beginning Balance	100,106	101,411
Dividend reinvestment	2	3
Capital stock issued under employee benefit and stock plans	297	326
Purchase of capital stock	(885)	(2,503)
Ending Balance	99,520	99,237
Additional paid-in capital [Member]
Beginning Balance	447,433	470,758
Dividend reinvestment	68	64
Capital stock issued under employee benefit and stock plans	10,444	10,815
Purchase of capital stock	(25,149)	(64,147)
Ending Balance	432,796	417,490
Retained earnings [Member]
Beginning Balance	1,246,973	983,374
Net income	46,390	71,986
Cash dividends paid	(12,924)	(9,849)
Ending Balance	1,280,439	1,045,511
Accumulated other comprehensive income (loss) [Member]
Beginning Balance	(150,662)	82,529
Other comprehensive income (loss)	25,260	(76,477)
Ending Balance	(125,402)	6,052
Non-controlling interest [Member]
Beginning Balance	24,371	20,569
Net income	657	1,587
Other comprehensive income (loss)	630	(1,701)
Cash dividends paid	0	0
Purchase of noncontrolling interests	(479)
Ending Balance	$ 25,179	$ 20,455