Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Financial information by segment (Details)

v3.19.3.a.u2
Segment Information - Financial information by segment (Details)
$ in Thousands
 3 Months Ended
Dec. 31, 2019
USD ($)
segment
Dec. 31, 2018
USD ($)
Financial information for each of the Company's business segments    
Number of operating segments | segment 3  
Revenue:    
Revenue $ 818,229 $ 664,619
Gross profit:    
Gross profit $ 175,450 $ 159,265
Gross profit (as a percent) 21.40% 24.00%
Selling, general and administrative expense:    
Selling, general and administrative expenses $ 87,227 $ 79,671
Selling, general, and administrative expense (as a percent) 10.70% 12.00%
Operating income:    
Operating income $ 79,135 $ 74,136
Operating income (as a percent) 9.70% 11.20%
Amortization of intangible assets $ (9,088) $ (5,458)
General Dynamics Information Technology's Citizen Engagement Centers    
Operating income:    
Business acquisition costs 2,700  
Segment Reconciling Items    
Selling, general and administrative expense:    
Selling, general and administrative expenses 537 2,092
Operating income:    
Amortization of intangible assets (9,088) (5,458)
Other operating income (loss) (537) (2,092)
U.S. Health & Human Services    
Revenue:    
Revenue 312,281 294,213
U.S. Health & Human Services | Operating Segments    
Revenue:    
Revenue 312,281 294,213
Gross profit:    
Gross profit $ 89,590 $ 88,031
Gross profit (as a percent) 28.70% 29.90%
Selling, general and administrative expense:    
Selling, general and administrative expenses $ 31,398 $ 32,139
Selling, general, and administrative expense (as a percent) 10.10% 10.90%
Operating income:    
Operating income $ 58,192 $ 55,892
Operating income (as a percent) 18.60% 19.00%
U.S. Federal Services    
Revenue:    
Revenue $ 366,571 $ 216,987
U.S. Federal Services | Operating Segments    
Revenue:    
Revenue 366,571 216,987
Gross profit:    
Gross profit $ 70,821 $ 47,985
Gross profit (as a percent) 19.30% 22.10%
Selling, general and administrative expense:    
Selling, general and administrative expenses $ 39,239 $ 26,632
Selling, general, and administrative expense (as a percent) 10.70% 12.30%
Operating income:    
Operating income $ 31,582 $ 21,353
Operating income (as a percent) 8.60% 9.80%
Outside the U.S.    
Revenue:    
Revenue $ 139,377 $ 153,419
Outside the U.S. | Operating Segments    
Revenue:    
Revenue 139,377 153,419
Gross profit:    
Gross profit $ 15,039 $ 23,249
Gross profit (as a percent) 10.80% 15.20%
Selling, general and administrative expense:    
Selling, general and administrative expenses $ 16,053 $ 18,808
Selling, general, and administrative expense (as a percent) 11.50% 12.30%
Operating income:    
Operating income $ (1,014) $ 4,441
Operating income (as a percent) (0.70%) 2.90%