Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 113,541	$ 123,650	$ 104,372
Pension and other postretirement benefit plans activity	7,583	6,774	(6,952)
Other comprehensive income (loss), net of income taxes	7,583	6,774	(6,952)
Comprehensive income	$ 121,124	$ 130,424	$ 97,420