Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 03, 2023	Oct. 28, 2022	Nov. 03, 2023	Oct. 28, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,895	$ 1,909	$ 5,707	$ 5,736
Prime contractor to federal government
Disaggregation of Revenue [Line Items]
Total revenues	1,710	1,725	5,156	5,212
Subcontractor to federal government
Disaggregation of Revenue [Line Items]
Total revenues	145	147	437	414
Other
Disaggregation of Revenue [Line Items]
Total revenues	40	37	114	110
Cost reimbursement
Disaggregation of Revenue [Line Items]
Total revenues	1,207	1,071	3,424	3,201
Time and materials (T&M)
Disaggregation of Revenue [Line Items]
Total revenues	382	363	1,107	1,077
Firm-fixed price (FFP)
Disaggregation of Revenue [Line Items]
Total revenues	306	475	1,176	1,458
Department of Defense
Disaggregation of Revenue [Line Items]
Total revenues	992	969	2,982	2,799
Other federal government agencies
Disaggregation of Revenue [Line Items]
Total revenues	863	903	2,611	2,827
Commercial, state and local
Disaggregation of Revenue [Line Items]
Total revenues	$ 40	$ 37	$ 114	$ 110