XML 73 R54.htm IDEA: XBRL DOCUMENT v3.24.3
Commitments and Contingencies (Details)
 12 Months Ended
Sep. 30, 2024
USD ($)
Guarantor Obligations [Line Items]  
Additional bonding capacity $ 773,200,000
Cash collateral requirement for guarantees 2 years
Probable liquidated damages $ 4,100,000
Loss contingency, estimate of actual or projected loss 4,600,000
Failure to meet contractual commitments, reduction to revenue 3,200,000
Surety Bond  
Guarantor Obligations [Line Items]  
Guarantee liability, letters of credit 426,800,000
Facility Agreement | Powell (UK) Limited  
Guarantor Obligations [Line Items]  
Guarantee liability, letters of credit 7,200,000
Revolving credit facility 20,100,000
Amount of credit facility remaining borrowing capacity 12,900,000
U.S. Revolver | Amended And Restated Credit Agreement  
Guarantor Obligations [Line Items]  
Amount of credit facility remaining borrowing capacity 86,200,000
U.S. Revolver | Amended And Restated Credit Agreement | Financial Standby Letter of Credit  
Guarantor Obligations [Line Items]  
Guarantee liability, letters of credit $ 63,800,000