Retirement Benefits (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Retirement Benefits [Abstract]
Service cost	$ 391	$ 635	$ 1,204	$ 1,876
Interest cost	1,956	2,051	5,963	6,089
Expected return on plan assets	(60)	(54)	(179)	(163)
Amortization of prior service cost	352	352	1,055	1,055
Amortization of net loss	448	555	1,345	1,663
Net periodic benefit cost	$ 3,087	$ 3,539	$ 9,388	$ 10,520