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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Goodwill, Gross		$ 1,095,731	$ 1,126,418	$ 872,597
Goodwill, Accumulated Impairment Loss		(678,342)	(150,842)	(150,842)
Goodwill		417,389	975,576	721,755
Goodwill, Acquired During Period		2,984	243,577
Goodwill, Translation Adjustments		(33,671)	10,244
Goodwill, Period Increase (Decrease)		(30,687)	253,821
Goodwill, Impairment Loss		(527,500)
Industrial [Member]
Goodwill, Gross		455,371	472,337	408,925
Goodwill, Accumulated Impairment Loss		(150,842)	(150,842)	(150,842)
Goodwill		304,529	321,495	258,083
Goodwill, Acquired During Period			60,100
Goodwill, Translation Adjustments		(19,950)	3,312
Goodwill, Period Increase (Decrease)		(16,966)	63,412
Goodwill, Impairment Loss		0
Infrastructure [Member]
Goodwill, Gross		640,360	654,081	463,672
Goodwill, Accumulated Impairment Loss		(527,500)	0	0
Goodwill		112,860	654,081	$ 463,672
Goodwill, Acquired During Period		0	183,477
Goodwill, Translation Adjustments		(13,721)	6,932
Goodwill, Period Increase (Decrease)		(13,721)	$ 190,409
Goodwill, Impairment Loss		$ (527,500)
March Charges [Member] | Infrastructure [Member]
Goodwill and Intangible Asset Impairment	$ 152,900
Goodwill, Impairment Loss	(152,500)
December Charges [Member] | Infrastructure [Member]
Goodwill and Intangible Asset Impairment	376,500
Goodwill, Impairment Loss	(375,000)
Infrastructure Indefinite-Lived Trademark Asset [Member] | March Charges [Member] | Infrastructure [Member]
Impairment of Intangible Assets (Excluding Goodwill)	400
Infrastructure Indefinite-Lived Trademark Asset [Member] | Charge Associated with Finalization [Member] | Infrastructure [Member]
Impairment of Intangible Assets (Excluding Goodwill)	6,800
Infrastructure Indefinite-Lived Trademark Asset [Member] | December Charges [Member] | Infrastructure [Member]
Impairment of Intangible Assets (Excluding Goodwill)	1,500
Minimum [Member] | Infrastructure [Member] | Portfolio of Businesses for Strategic Alternatives [Member]
Net Book Value	170,000
Maximum [Member] | Infrastructure [Member] | Portfolio of Businesses for Strategic Alternatives [Member]
Net Book Value	$ 250,000
Industrial Reporting Unit [Member]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	90.00%

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