Equity Changes in Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Stockholders Equity Note [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Other, Tax	$ (25)	$ (25)	$ (75)	$ (75)
Increase (Decrease) in Stockholders' Equity
Beginning balance	5,760,141	6,298,286	6,662,808	5,741,481
Net income	285,462	242,518	832,968	740,242
Other Comprehensive Income (Loss), Net of Tax	(347,888)	26,163	(814,906)	260,727
Dividends paid	(87,989)	(71,798)	(252,745)	(206,516)
Stock incentive plan activity	22,092	9,064	70,392	68,299
Shares purchased at cost	(476,879)	(50,000)	(1,343,578)	(150,000)
Ending balance	5,154,939	6,454,233	5,154,939	6,454,233
Shareholders' Equity
Increase (Decrease) in Stockholders' Equity
Beginning balance	5,756,749	6,295,226	6,659,428	5,738,426
Net income	285,345	242,406	832,686	740,010
Other Comprehensive Income (Loss), Net of Tax	(347,861)	26,077	(814,726)	260,756
Dividends paid	(87,731)	(71,777)	(252,487)	(206,495)
Stock incentive plan activity	22,092	9,064	70,392	68,299
Shares purchased at cost	(476,879)	(50,000)	(1,343,578)	(150,000)
Ending balance	5,151,715	6,450,996	5,151,715	6,450,996
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity
Beginning balance	3,392	3,060	3,380	3,055
Net income	117	112	282	232
Other Comprehensive Income (Loss), Net of Tax	(27)	86	(180)	(29)
Dividends paid	(258)	(21)	(258)	(21)
Stock incentive plan activity	0	0	0	0
Shares purchased at cost	0	0	0	0
Ending balance	$ 3,224	$ 3,237	$ 3,224	$ 3,237