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BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION - Reconciliation of Segment Assets to Consolidated Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Assets	$ 6,705,738	$ 5,781,898
Operating Segments
Segment Reporting Information [Line Items]
Assets	6,458,497	4,142,239
Investments and corporate operations
Segment Reporting Information [Line Items]
Assets	247,241	1,639,659
North America Solutions | Operating Segments
Segment Reporting Information [Line Items]
Assets	2,957,139	3,225,410
International Solutions | Operating Segments
Segment Reporting Information [Line Items]
Assets	2,426,613	685,833
Offshore Solutions | Operating Segments
Segment Reporting Information [Line Items]
Assets	714,708	73,119
Other | Operating Segments
Segment Reporting Information [Line Items]
Assets	$ 360,037	$ 157,877

X

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Amount of asset recognized for present right to economic benefit.

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