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BUSINESS COMBINATION - Tangible Assets Useful Lives (Details) - USD ($)
$ in Thousands
Jan. 16, 2025
Sep. 30, 2025
Sep. 30, 2024
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, net   $ 485,540 $ 54,147
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Weighted average useful life   9 years 15 years
Trade name      
Finite-Lived Intangible Assets [Line Items]      
Weighted average useful life   13 years 13 years
Developed technology      
Finite-Lived Intangible Assets [Line Items]      
Weighted average useful life   14 years 14 years
KCA Deutag      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, net $ 468,809    
KCA Deutag | Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets acquired 432,200    
Weighted average useful life   2 years  
KCA Deutag | Trade name      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets acquired $ 10,860    
Weighted average useful life 10 years    
KCA Deutag | Developed technology      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible assets acquired $ 21,420    
Weighted average useful life 11 years    
In-process research and development | KCA Deutag      
Indefinite-Lived Intangible Assets [Line Items]      
Indefinite-lived intangible assets acquired $ 4,329