DIVESTITURES - Divestiture of CAS Disposal Group - Narrative (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Mar. 28, 2025	Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of businesses, net of cash divested				$ 831	$ 158
Income before income taxes		$ 524	$ 390	983	680
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| CAS Disposal Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of businesses, net of cash divested	$ 831
Income before income taxes			$ 30	21	$ 56
Noncontrolling interest derecognized with divestiture				63
Accumulated other comprehensive income derecognized from divestiture				6
Pre-tax loss				$ (17)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

L3HARRIS TECHNOLOGIES, INC. /DE/ 10-Q