Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) employee in Thousands, $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jul. 03, 2026
USD ($)
employee
|
Jul. 04, 2025
USD ($)
|
Jul. 03, 2026
USD ($)
employee
segment
|
Jul. 04, 2025
USD ($)
|
|
| Significant Accounting Policies [Line Items] | ||||
| Number of employees in global workforce | employee | 50 | 50 | ||
| Number of reportable segments | segment | 4 | |||
| Revenue recognized for performance obligation satisfied in the previous periods | $ | $ 21 | $ 3 | $ 8 | $ 24 |
| Leidos, Inc. | ||||
| Significant Accounting Policies [Line Items] | ||||
| Controlling ownership interest (as a percent) | 100.00% | 100.00% | ||