Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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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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GOODWILL - Changes in Carrying Amount of Goodwill (Details) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 01, 2022 USD ($) segment	Dec. 31, 2021 USD ($) segment	Jan. 01, 2021 segment
Goodwill [Roll Forward]
Beginning Balance	$ 18,189
Currency translation adjustments	5
Ending Balance	$ 18,194	$ 18,189
Number of operating segments \| segment	3	4	3
Number of reportable segments \| segment	3	4	3
As Previously Reported
Goodwill [Roll Forward]
Beginning Balance	$ 18,189
Ending Balance		$ 18,189
Restatement Adjustment
Goodwill [Roll Forward]
Beginning Balance	0
Ending Balance		0
Integrated Mission Systems
Goodwill [Roll Forward]
Beginning Balance	8,187
Currency translation adjustments	6
Ending Balance	8,193	8,187
Integrated Mission Systems \| As Previously Reported
Goodwill [Roll Forward]
Beginning Balance	6,485
Ending Balance		6,485
Integrated Mission Systems \| Restatement Adjustment
Goodwill [Roll Forward]
Beginning Balance	1,702
Ending Balance		1,702
Space & Airborne Systems
Goodwill [Roll Forward]
Beginning Balance	5,849
Currency translation adjustments	(2)
Ending Balance	5,847	5,849
Space & Airborne Systems \| As Previously Reported
Goodwill [Roll Forward]
Beginning Balance	5,202
Ending Balance		5,202
Space & Airborne Systems \| Restatement Adjustment
Goodwill [Roll Forward]
Beginning Balance	647
Ending Balance		647
Communication Systems
Goodwill [Roll Forward]
Beginning Balance	4,153
Currency translation adjustments	1
Ending Balance	4,154	4,153
Communication Systems \| As Previously Reported
Goodwill [Roll Forward]
Beginning Balance	4,153
Ending Balance		4,153
Communication Systems \| Restatement Adjustment
Goodwill [Roll Forward]
Beginning Balance	0
Ending Balance		0
Aviation Systems
Goodwill [Roll Forward]
Beginning Balance	0
Currency translation adjustments	0
Ending Balance	0	0
Aviation Systems \| As Previously Reported
Goodwill [Roll Forward]
Beginning Balance	2,349
Ending Balance		2,349
Aviation Systems \| Restatement Adjustment
Goodwill [Roll Forward]
Beginning Balance	$ (2,349)
Ending Balance		$ (2,349)