Amortization of Intangible Assets and Amortization of Debt Issuance Costs and Discounts

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Number Of Businesses Transferred

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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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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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BUSINESS SEGMENTS - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
BUSINESS SEGMENTS - Narrative (Details) $ in Millions	Apr. 03, 2020 business	Jan. 03, 2020 USD ($)	Dec. 28, 2018 USD ($)	Jan. 01, 2021 USD ($) segment	Jan. 03, 2020 USD ($)	Jun. 28, 2019 USD ($)	Jun. 29, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment				4
Number of operating segments \| segment				4
Number of businesses transferred \| business	2
Amortization of intangible assets, debt premium, debt discount and debt issuance costs		$ 285		$ 714		$ 120	$ 116
Revenue		9,263	$ 3,208	18,194	$ 12,856	6,801	6,168
International
Segment Reporting Information [Line Items]
Revenue		$ 778		$ 1,196		$ 271	$ 314
Revenue from Contract with Customer Benchmark \| Government Contracts Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage		73.00%		78.00%		77.00%	75.00%
Revenue, Segment Benchmark \| Product Concentration Risk \| Integrated Mission Systems
Segment Reporting Information [Line Items]
Concentration risk percentage				34.00%
Revenue, Segment Benchmark \| Product Concentration Risk \| Space and Airborne Systems
Segment Reporting Information [Line Items]
Concentration risk percentage				16.00%
Revenue, Segment Benchmark \| Product Concentration Risk \| Communication Systems
Segment Reporting Information [Line Items]
Concentration risk percentage				15.00%
Revenue, Segment Benchmark \| Product Concentration Risk \| Aviation Systems
Segment Reporting Information [Line Items]
Concentration risk percentage				38.00%
Revenue, Product and Service Benchmark \| Geographic Concentration Risk \| International
Segment Reporting Information [Line Items]
Concentration risk percentage		21.00%		20.00%		22.00%	23.00%
Revenue		$ 2,000		$ 3,700		$ 1,500	$ 1,400