Segment Data (Details) (USD $) In Thousands	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2011
External sales:
Total external sales	$ 658,877	$ 529,158
Operating income:
Total operating income (loss)	101,610	57,512
Interest expense	5,487	5,963
Other expense, net	574	1,911
Income (loss) from continuing operations before income taxes	95,549	49,638
Asset
Total assets	2,611,518		2,754,469
Industrial [Member]
External sales:
Total external sales	417,819	330,658
Operating income:
Total operating income (loss)	72,685	36,108
Infrastructure [Member]
External sales:
Total external sales	241,058	198,500
Operating income:
Total operating income (loss)	32,554	26,503
Corporate [Member]
Operating income:
Total operating income (loss)	$ (3,629)	$ (5,099)