Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Financial information by segment (Details)

v3.20.2
Segment Information - Financial information by segment (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
segment
Jun. 30, 2019
USD ($)
Financial information for each of the Company's business segments        
Number of operating segments | segment     3  
Revenue:        
Revenue $ 901,337 $ 730,710 $ 2,537,701 $ 2,131,849
Gross profit:        
Gross profit $ 185,603 $ 174,247 $ 514,151 $ 502,934
Gross profit (as a percent) 20.60% 23.80% 20.30% 23.60%
Selling, general & administrative expense:        
Selling, general and administrative expenses $ 89,582 $ 81,604 $ 283,662 $ 239,377
Selling, general, and administrative expense (as a percent) 9.90% 11.20% 11.20% 11.20%
Operating income:        
Operating income $ 87,309 $ 83,594 $ 203,755 $ 239,531
Operating income (as a percent) 9.70% 11.40% 8.00% 11.20%
Amortization of intangible assets $ (8,712) $ (9,049) $ (26,734) $ (24,026)
Gain on sale of a business     1,706 0
Segment Reconciling Items        
Selling, general & administrative expense:        
Selling, general and administrative expenses 134 503 4,155 2,201
Operating income:        
Amortization of intangible assets (8,712) (9,049) (26,734) (24,026)
Gain on sale of a business 1,706 0 1,706 0
Other operating income (loss) (134) (503) (4,155) (2,201)
U.S. Health & Human Services        
Revenue:        
Revenue 336,950 291,132 957,929 876,082
U.S. Health & Human Services | Operating Segments        
Revenue:        
Revenue 336,950 291,132 957,929 876,082
Gross profit:        
Gross profit $ 93,029 $ 86,664 $ 268,073 $ 260,955
Gross profit (as a percent) 27.60% 29.80% 28.00% 29.80%
Selling, general & administrative expense:        
Selling, general and administrative expenses $ 31,996 $ 32,414 $ 102,633 $ 93,953
Selling, general, and administrative expense (as a percent) 9.50% 11.10% 10.70% 10.70%
Operating income:        
Operating income $ 61,033 $ 54,250 $ 165,440 $ 167,002
Operating income (as a percent) 18.10% 18.60% 17.30% 19.10%
U.S. Federal Services        
Revenue:        
Revenue $ 450,143 $ 292,295 $ 1,210,105 $ 799,018
U.S. Federal Services | Operating Segments        
Revenue:        
Revenue 450,143 292,295 1,210,105 799,018
Gross profit:        
Gross profit $ 84,723 $ 66,803 $ 232,502 $ 175,484
Gross profit (as a percent) 18.80% 22.90% 19.20% 22.00%
Selling, general & administrative expense:        
Selling, general and administrative expenses $ 45,490 $ 32,896 $ 131,455 $ 90,632
Selling, general, and administrative expense (as a percent) 10.10% 11.30% 10.90% 11.30%
Operating income:        
Operating income $ 39,233 $ 33,907 $ 101,047 $ 84,852
Operating income (as a percent) 8.70% 11.60% 8.40% 10.60%
Outside the U.S.        
Revenue:        
Revenue $ 114,244 $ 147,283 $ 369,667 $ 456,749
Outside the U.S. | Operating Segments        
Revenue:        
Revenue 114,244 147,283 369,667 456,749
Gross profit:        
Gross profit $ 7,851 $ 20,780 $ 13,576 $ 66,495
Gross profit (as a percent) 6.90% 14.10% 3.70% 14.60%
Selling, general & administrative expense:        
Selling, general and administrative expenses $ 13,668 $ 15,791 $ 47,125 $ 52,591
Selling, general, and administrative expense (as a percent) 12.00% 10.70% 12.70% 11.50%
Operating income:        
Operating income $ (5,817) $ 4,989 $ (33,549) $ 13,904
Operating income (as a percent) (5.10%) 3.40% (9.10%) 3.00%