Goodwill and Other Intangible Assets - Carrying Amount of Goodwill Attributable to Each Segment (Details) - USD ($) $ in Thousands	6 Months Ended
Dec. 31, 2021	Jun. 30, 2021
Goodwill [Roll Forward]
Gross goodwill	$ 1,084,191	$ 1,088,487
Accumulated impairment losses	(810,872)	(810,872)
Goodwill, Beginning Balance	277,615
Change in gross goodwill due to translation	(4,296)
Goodwill, Ending Balance	273,319
Infrastructure [Member]
Goodwill [Roll Forward]
Gross goodwill	633,211	633,211
Accumulated impairment losses	(633,211)	(633,211)
Goodwill, Beginning Balance	0
Change in gross goodwill due to translation	0
Goodwill, Ending Balance	0
Metal Cutting
Goodwill [Roll Forward]
Gross goodwill	450,980	455,276
Accumulated impairment losses	(177,661)	$ (177,661)
Goodwill, Beginning Balance	277,615
Change in gross goodwill due to translation	(4,296)
Goodwill, Ending Balance	$ 273,319

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.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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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.

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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