Quarterly report pursuant to Section 13 or 15(d)

Business Segments - Financial information by segment (Details)

v3.23.2
Business Segments - Financial information by segment (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
segment
Jun. 30, 2022
USD ($)
Financial information for each of the Company's business segments        
Number of operating segments | segment     3  
Revenue:        
Revenue $ 1,188,677 $ 1,125,785 $ 3,644,775 $ 3,453,987
Gross profit:        
Gross profit $ 264,364 $ 210,221 $ 737,714 $ 666,827
Gross profit (as a percent) 22.20% 18.70% 20.20% 19.30%
Selling, general, and administrative expenses:        
Selling, general, and administrative expenses $ 182,545 $ 132,974 $ 471,445 $ 387,502
Selling, general, and administrative expenses (as a percent) 15.40% 11.80% 12.90% 11.20%
Loss on sale of businesses     $ 883 $ 0
Operating income/(loss):        
Operating income $ 58,388 $ 54,557 $ 195,670 $ 211,374
Operating income (as a percent) 4.90% 4.80% 5.40% 6.10%
Amortization of intangible assets $ (23,431) $ (22,690) $ (70,599) $ (67,951)
Loss on sale of businesses     (883) 0
Segment Reconciling Items        
Selling, general, and administrative expenses:        
Selling, general, and administrative expenses 23,995 (1,944) 24,242 (16)
Loss on sale of businesses 0 0 883 0
Operating income/(loss):        
Operating income (23,995) 1,944 (24,242) 16
Amortization of intangible assets (23,431) (22,690) (70,599) (67,951)
Loss on sale of businesses 0 0 (883) 0
Other expense 22,100   22,100  
U.S. Federal Services | Operating Segments        
Revenue:        
Revenue 583,960 525,519 1,786,202 1,680,678
Gross profit:        
Gross profit $ 156,945 $ 124,203 $ 402,513 $ 365,932
Gross profit (as a percent) 26.90% 23.60% 22.50% 21.80%
Selling, general, and administrative expenses:        
Selling, general, and administrative expenses $ 82,892 $ 69,466 $ 229,591 $ 203,340
Selling, general, and administrative expenses (as a percent) 14.20% 13.20% 12.90% 12.10%
Operating income/(loss):        
Operating income $ 74,053 $ 54,737 $ 172,922 $ 162,592
Operating income (as a percent) 12.70% 10.40% 9.70% 9.70%
U.S. Services | Operating Segments        
Revenue:        
Revenue $ 449,061 $ 399,320 $ 1,338,242 $ 1,183,814
Gross profit:        
Gross profit $ 98,538 $ 74,135 $ 268,152 $ 248,805
Gross profit (as a percent) 21.90% 18.60% 20.00% 21.00%
Selling, general, and administrative expenses:        
Selling, general, and administrative expenses $ 51,536 $ 42,351 $ 140,793 $ 115,726
Selling, general, and administrative expenses (as a percent) 11.50% 10.60% 10.50% 9.80%
Operating income/(loss):        
Operating income $ 47,002 $ 31,784 $ 127,359 $ 133,079
Operating income (as a percent) 10.50% 8.00% 9.50% 11.20%
Outside the U.S. | Operating Segments        
Revenue:        
Revenue $ 155,656 $ 200,946 $ 520,331 $ 589,495
Gross profit:        
Gross profit $ 8,881 $ 11,883 $ 67,049 $ 52,090
Gross profit (as a percent) 5.70% 5.90% 12.90% 8.80%
Selling, general, and administrative expenses:        
Selling, general, and administrative expenses $ 24,122 $ 23,101 $ 75,936 $ 68,452
Selling, general, and administrative expenses (as a percent) 15.50% 11.50% 14.60% 11.60%
Operating income/(loss):        
Operating income $ (15,241) $ (11,218) $ (8,887) $ (16,362)
Operating income (as a percent) (9.80%) (5.60%) (1.70%) (2.80%)