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Business Segments (Narrative) (Details) - segment	12 Months Ended
	Jan. 03, 2025	Dec. 29, 2023	Dec. 30, 2022
Segment Reporting Information [Line Items]
Number of operating segments	6
Number of reportable segments	4
Total Revenues | Geographic Concentration Risk | International
Segment Reporting Information [Line Items]
Percentage of sales	8.00%	9.00%	8.00%
US Government | Total Revenues | Government Contracts Concentration Risk
Segment Reporting Information [Line Items]
Percentage of sales	87.00%	87.00%	86.00%
DoD and U.S. Intelligence Community | Total Revenues | Government Contracts Concentration Risk
Segment Reporting Information [Line Items]
Percentage of sales	48.00%	49.00%	44.00%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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