SUBSEQUENT EVENTS - Additional Information (Details) $ / shares in Units, shares in Millions, $ in Millions			6 Months Ended	12 Months Ended
	Jul. 01, 2019 segment	Jun. 29, 2019 employee country $ / shares shares	Dec. 31, 2019 USD ($)	Jun. 28, 2019 employee country segment	Dec. 31, 2018 USD ($)	Sep. 27, 2019 USD ($)
Business Acquisition [Line Items]
Entity number of employees | employee				18,200
Number of countries in which entity operates | country				100
Number of business segments | segment				3
L3Harris | L3
Business Acquisition [Line Items]
Calendar year revenues from acquired entity | $					$ 10,000
Subsequent Event
Business Acquisition [Line Items]
Number of business segments | segment	4
Subsequent Event | L3Harris
Business Acquisition [Line Items]
Fixed exchange conversion ratio per share		1.30
Entity number of employees | employee		50,000
Number of countries in which entity operates | country		130
Shares of common stock issued as merger consideration (in shares) | shares		104
Price per share of common stock as of the closing date (in dollars per share) | $ / shares		$ 189.13
Subsequent Event | L3Harris | L3
Business Acquisition [Line Items]
Entity number of employees | employee		31,000
Subsequent Event | L3Harris | Former Harris Shareholders
Business Acquisition [Line Items]
Percentage of voting interests acquired		54.00%
Subsequent Event | L3Harris | Former L3 Shareholders
Business Acquisition [Line Items]
Percentage of voting interests acquired		46.00%
Forecast | Subsequent Event | L3Harris
Business Acquisition [Line Items]
Revenues | $			$ 18,000
Forecast | Subsequent Event | L3Harris | Communication Systems | Discontinued Operations, Disposed of by Sale | Harris Night Vision
Business Acquisition [Line Items]
Cash proceeds from divestiture of business | $						$ 350