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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Goodwill and Intangible Asset Impairment	$ 0
Goodwill, Gross	1,084,064	$ 1,085,855	$ 1,085,420
Goodwill, Accumulated Impairment Loss	784,053	784,053	784,053
Goodwill	300,011	301,802	301,367
Goodwill, Period Increase (Decrease)	(1,791)	435
Industrial [Member]
Goodwill, Gross	409,912	411,458	410,694
Goodwill, Accumulated Impairment Loss	(137,204)	(137,204)	(137,204)
Goodwill	272,708	274,254	273,490
Goodwill, Period Increase (Decrease)	(1,546)	764
Infrastructure [Member]
Goodwill, Gross	633,211	633,211	633,211
Goodwill, Accumulated Impairment Loss	(633,211)	(633,211)	(633,211)
Goodwill	0	0	$ 0
Goodwill, Period Increase (Decrease)	$ 0	$ 0

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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