Equity Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Pension and Other Postretirement Benefit Plans
Amortization of prior service cost and initial obligation	$ (1,643)	$ (1,900)	$ (3,686)	$ (4,544)
Recognized actuarial loss	(42,577)	(37,548)	(85,824)	(77,227)
Total before tax	(44,220)	(39,448)	(89,510)	(81,771)
Tax benefit	15,999	14,384	32,393	29,849
Net of tax	$ (28,221)	$ (25,064)	$ (57,117)	$ (51,922)