Annual report pursuant to Section 13 and 15(d)

Business Combinations and Divestitures - Schedule of Asset Acquired and Liabilities Assumed, VES (Details)

v3.23.3
Business Combinations and Divestitures - Schedule of Asset Acquired and Liabilities Assumed, VES (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Allocation of Assets and Liabilities      
Goodwill $ 1,779,215 $ 1,779,415 $ 1,774,406
VES Group, Inc.      
Allocation of Assets and Liabilities      
Cash consideration, net of cash acquired 1,370,631    
Accounts receivable - billed, billable and unbilled 44,078    
Prepaid expenses and other current assets 7,955    
Property and equipment, net 8,021    
Operating lease right-of-use assets 18,898    
Intangible assets 664,000    
Other assets 7,166    
Total identifiable assets acquired 750,118    
Accounts payable and accrued compensation 43,986    
Operating lease liabilities 18,898    
Income taxes payable, current 5,673    
Deferred income taxes 171,023    
Other long-term liabilities 12,270    
Total identifiable liabilities assumed 251,850    
Net identifiable assets acquired 498,268    
Goodwill 872,363    
Net assets acquired $ 1,370,631