SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) employee in Thousands, $ in Millions	12 Months Ended
	Jan. 02, 2026 USD ($) employee country	Jan. 03, 2025 USD ($)	Dec. 29, 2023 USD ($)
Business Combination, Separately Recognized Transaction [Line Items]
Number of countries in which entity operates (more than) | country	100
Number of employees | employee	45
Accounts receivable, allowance for credit loss, current	$ 21	$ 21
Internal use software, useful life minimum	2 years
Internal use software, useful life maximum	10 years
Equity method investments	$ 88	62
Equity interest investments	$ 82	55
Milestone payments, percentage of contract price	100.00%
Monthly progress payments, percentage of costs incurred	80.00%
Revenue recognized from performance obligations satisfied in previous periods	$ 212	210	$ 118
Backlog	38,700	34,200
Remaining performance obligation, funded backlog	26,900	23,300
Research and development costs	$ 536	$ 515	$ 480
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-03 | Revenue, Remaining Performance Obligation, First Year
Business Combination, Separately Recognized Transaction [Line Items]
Remaining performance obligation percentage	45.00%
Expected timing of satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-03 | Revenue, Remaining Performance Obligation, First And Second Years
Business Combination, Separately Recognized Transaction [Line Items]
Remaining performance obligation percentage	70.00%
Expected timing of satisfaction period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-02
Business Combination, Separately Recognized Transaction [Line Items]
Expected timing of satisfaction period
Minimum
Business Combination, Separately Recognized Transaction [Line Items]
Finite-lived intangible asset, useful life	3 years
Minimum | Buildings
Business Combination, Separately Recognized Transaction [Line Items]
Property, plant and equipment, useful life	2 years
Minimum | Machinery and equipment
Business Combination, Separately Recognized Transaction [Line Items]
Property, plant and equipment, useful life	2 years
Maximum
Business Combination, Separately Recognized Transaction [Line Items]
Finite-lived intangible asset, useful life	20 years
Maximum | Buildings
Business Combination, Separately Recognized Transaction [Line Items]
Property, plant and equipment, useful life	45 years
Maximum | Machinery and equipment
Business Combination, Separately Recognized Transaction [Line Items]
Property, plant and equipment, useful life	10 years