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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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